/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=2 sw=2 et tw=78: */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Original Author: David W. Hyatt (hyatt@netscape.com) * Mike Pinkerton (pinkerton@netscape.com) * Dean Tessman * Ben Goodger * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsMenuPopupFrame.h" #include "nsGkAtoms.h" #include "nsIContent.h" #include "nsContentUtils.h" #include "prtypes.h" #include "nsIAtom.h" #include "nsPresContext.h" #include "nsStyleContext.h" #include "nsCSSRendering.h" #include "nsINameSpaceManager.h" #include "nsIViewManager.h" #include "nsWidgetsCID.h" #include "nsMenuFrame.h" #include "nsIPopupSetFrame.h" #include "nsPIDOMWindow.h" #include "nsIDOMScreen.h" #include "nsIPresShell.h" #include "nsFrameManager.h" #include "nsIDocument.h" #include "nsIDeviceContext.h" #include "nsRect.h" #include "nsIDOMXULDocument.h" #include "nsILookAndFeel.h" #include "nsIComponentManager.h" #include "nsBoxLayoutState.h" #include "nsIScrollableView.h" #include "nsIScrollableFrame.h" #include "nsGUIEvent.h" #include "nsIRootBox.h" #include "nsIDocShellTreeItem.h" #include "nsReadableUtils.h" #include "nsUnicharUtils.h" #include "nsCSSFrameConstructor.h" #include "nsIBoxLayout.h" #include "nsIPopupBoxObject.h" #include "nsIReflowCallback.h" #ifdef XP_WIN #include "nsISound.h" #endif const PRInt32 kMaxZ = 0x7fffffff; //XXX: Shouldn't there be a define somewhere for MaxInt for PRInt32 static nsIPopupSetFrame* GetPopupSetFrame(nsPresContext* aPresContext) { nsIRootBox* rootBox = nsIRootBox::GetRootBox(aPresContext->PresShell()); if (!rootBox) return nsnull; nsIFrame* popupSetFrame = rootBox->GetPopupSetFrame(); if (!popupSetFrame) return nsnull; nsIPopupSetFrame* popupSet = nsnull; CallQueryInterface(popupSetFrame, &popupSet); return popupSet; } // NS_NewMenuPopupFrame // // Wrapper for creating a new menu popup container // nsIFrame* NS_NewMenuPopupFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsMenuPopupFrame (aPresShell, aContext); } NS_IMETHODIMP_(nsrefcnt) nsMenuPopupFrame::AddRef(void) { return NS_OK; } NS_IMETHODIMP_(nsrefcnt) nsMenuPopupFrame::Release(void) { return NS_OK; } // // QueryInterface // NS_INTERFACE_MAP_BEGIN(nsMenuPopupFrame) NS_INTERFACE_MAP_ENTRY(nsIMenuParent) NS_INTERFACE_MAP_END_INHERITING(nsBoxFrame) // // nsMenuPopupFrame ctor // nsMenuPopupFrame::nsMenuPopupFrame(nsIPresShell* aShell, nsStyleContext* aContext) :nsBoxFrame(aShell, aContext), mCurrentMenu(nsnull), mTimerMenu(nsnull), mCloseTimer(nsnull), mMenuCanOverlapOSBar(PR_FALSE), mShouldAutoPosition(PR_TRUE), mShouldRollup(PR_TRUE), mConsumeRollupEvent(nsIPopupBoxObject::ROLLUP_DEFAULT), mInContentShell(PR_TRUE) { SetIsContextMenu(PR_FALSE); // we're not a context menu by default } // ctor NS_IMETHODIMP nsMenuPopupFrame::Init(nsIContent* aContent, nsIFrame* aParent, nsIFrame* aPrevInFlow) { nsresult rv = nsBoxFrame::Init(aContent, aParent, aPrevInFlow); // Set up a mediator which can be used for callbacks on this frame. mTimerMediator = new nsMenuPopupTimerMediator(this); if (NS_UNLIKELY(!mTimerMediator)) return NS_ERROR_OUT_OF_MEMORY; nsPresContext* presContext = PresContext(); // lookup if we're allowed to overlap the OS bar (menubar/taskbar) from the // look&feel object PRBool tempBool; presContext->LookAndFeel()-> GetMetric(nsILookAndFeel::eMetric_MenusCanOverlapOSBar, tempBool); mMenuCanOverlapOSBar = tempBool; CreateViewForFrame(presContext, this, GetStyleContext(), PR_TRUE); // Now that we've made a view, remove it and insert it at the correct // position in the view hierarchy (as the root view). We do this so that we // can draw the menus outside the confines of the window. nsIView* ourView = GetView(); nsIViewManager* viewManager = ourView->GetViewManager(); // Remove the view from its old position. viewManager->RemoveChild(ourView); // Reinsert ourselves as the root view with a maximum z-index. nsIView* rootView; viewManager->GetRootView(rootView); viewManager->SetViewZIndex(ourView, PR_FALSE, kMaxZ); viewManager->InsertChild(rootView, ourView, nsnull, PR_TRUE); // XXX Hack. The menu's view should float above all other views, // so we use the nsIView::SetFloating() to tell the view manager // about that constraint. viewManager->SetViewFloating(ourView, PR_TRUE); nsCOMPtr cont = PresContext()->GetContainer(); nsCOMPtr dsti = do_QueryInterface(cont); PRInt32 type = -1; if (dsti && NS_SUCCEEDED(dsti->GetItemType(&type)) && type == nsIDocShellTreeItem::typeChrome) mInContentShell = PR_FALSE; // XXX make sure we are hidden (shouldn't this be done automatically?) viewManager->SetViewVisibility(ourView, nsViewVisibility_kHide); if (!ourView->HasWidget()) { CreateWidgetForView(ourView); } MoveToAttributePosition(); return rv; } nsresult nsMenuPopupFrame::CreateWidgetForView(nsIView* aView) { // Create a widget for ourselves. nsWidgetInitData widgetData; widgetData.mWindowType = eWindowType_popup; widgetData.mBorderStyle = eBorderStyle_default; widgetData.clipSiblings = PR_TRUE; PRBool isCanvas; const nsStyleBackground* bg; PRBool hasBG = nsCSSRendering::FindBackground(PresContext(), this, &bg, &isCanvas); PRBool viewHasTransparentContent = hasBG && (bg->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT) && !GetStyleDisplay()->mAppearance && !mInContentShell; nsIContent* parentContent = GetContent()->GetParent(); nsIAtom *tag = nsnull; if (parentContent) tag = parentContent->Tag(); widgetData.mDropShadow = !(viewHasTransparentContent || tag == nsGkAtoms::menulist); #if defined(XP_MACOSX) || defined(XP_BEOS) static NS_DEFINE_IID(kCPopupCID, NS_POPUP_CID); aView->CreateWidget(kCPopupCID, &widgetData, nsnull, PR_TRUE, PR_TRUE, eContentTypeUI); #else static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID); aView->CreateWidget(kCChildCID, &widgetData, nsnull, PR_TRUE, PR_TRUE); #endif aView->GetWidget()->SetWindowTranslucency(viewHasTransparentContent); return NS_OK; } void nsMenuPopupFrame::InvalidateInternal(const nsRect& aDamageRect, nscoord aX, nscoord aY, nsIFrame* aForChild, PRBool aImmediate) { InvalidateRoot(aDamageRect, aX, aY, aImmediate); } void nsMenuPopupFrame::GetLayoutFlags(PRUint32& aFlags) { aFlags = NS_FRAME_NO_SIZE_VIEW | NS_FRAME_NO_MOVE_VIEW | NS_FRAME_NO_VISIBILITY; } /////////////////////////////////////////////////////////////////////////////// // GetViewOffset // Retrieves the offset of the given view with the root view, in the // coordinate system of the root view. void nsMenuPopupFrame::GetViewOffset(nsIView* aView, nsPoint& aPoint) { // Notes: // 1) The root view is the client area of the toplevel window that // this popup is anchored to. // 2) Each menupopup is a child of the root view (see // nsMenuPopupFrame::Init()) // 3) The coordinates that we return are the total distance between // the top left of the start view and the origin of the root view. // Keep track of the root view so that we know to stop there nsIView* rootView; aView->GetViewManager()->GetRootView(rootView); aPoint = aView->GetOffsetTo(rootView); } /////////////////////////////////////////////////////////////////////////////// // GetRootViewForPopup // Retrieves the view for the popup widget that contains the given frame. // If the given frame is not contained by a popup widget, return the // root view. This is the root view of the pres context's // viewmanager if aStopAtViewManagerRoot is true; otherwise it's the // root view of the root viewmanager. void nsMenuPopupFrame::GetRootViewForPopup(nsIFrame* aStartFrame, PRBool aStopAtViewManagerRoot, nsIView** aResult) { *aResult = nsnull; nsIView* view = aStartFrame->GetClosestView(); NS_ASSERTION(view, "frame must have a closest view!"); if (view) { nsIView* rootView = nsnull; if (aStopAtViewManagerRoot) { view->GetViewManager()->GetRootView(rootView); } while (view) { // Walk up the view hierarchy looking for a view whose widget has a // window type of eWindowType_popup - in other words a popup window // widget. If we find one, this is the view we want. nsIWidget* widget = view->GetWidget(); if (widget) { nsWindowType wtype; widget->GetWindowType(wtype); if (wtype == eWindowType_popup) { *aResult = view; return; } } if (aStopAtViewManagerRoot && view == rootView) { *aResult = view; return; } nsIView* temp = view->GetParent(); if (!temp) { // Otherwise, we've walked all the way up to the root view and not // found a view for a popup window widget. Just return the root view. *aResult = view; } view = temp; } } } // // AdjustClientXYForNestedDocuments // // almost certainly, the document where the mouse was clicked is not // the document that contains the popup, especially if we're viewing a page // with frames. Thus we need to make adjustments to the client coordinates to // take this into account and get them back into the relative coordinates of // this document. // void nsMenuPopupFrame::AdjustClientXYForNestedDocuments ( nsIDOMXULDocument* inPopupDoc, nsIPresShell* inPopupShell, PRInt32 inClientX, PRInt32 inClientY, PRInt32* outAdjX, PRInt32* outAdjY ) { if ( !inPopupDoc || !outAdjX || !outAdjY ) return; // Find the widget associated with the popup's document nsIWidget* popupDocumentWidget = nsnull; nsIViewManager* viewManager = inPopupShell->GetViewManager(); if ( viewManager ) { nsIView* rootView; viewManager->GetRootView(rootView); if ( rootView ) popupDocumentWidget = rootView->GetNearestWidget(nsnull); } NS_ASSERTION(popupDocumentWidget, "ACK, BAD WIDGET"); // Find the widget associated with the target's document. // For tooltips, we check the document's tooltipNode (which is set by // nsXULTooltipListener). For regular popups, use popupNode (set by // nsXULPopupListener). nsCOMPtr targetNode; if (mContent->Tag() == nsGkAtoms::tooltip) inPopupDoc->TrustedGetTooltipNode(getter_AddRefs(targetNode)); else inPopupDoc->TrustedGetPopupNode(getter_AddRefs(targetNode)); //NS_ASSERTION(targetNode, "no popup/tooltip node on document!"); nsCOMPtr targetAsContent ( do_QueryInterface(targetNode) ); nsIWidget* targetDocumentWidget = nsnull; if ( targetAsContent ) { nsCOMPtr targetDocument = targetAsContent->GetDocument(); if (targetDocument) { nsIPresShell *shell = targetDocument->GetPrimaryShell(); if ( shell ) { // We might be inside a popup widget. If so, we need to use that widget and // not the root view's widget. nsIFrame* targetFrame = shell->GetPrimaryFrameFor(targetAsContent); nsIView* parentView = nsnull; if (targetFrame) { GetRootViewForPopup(targetFrame, PR_TRUE, &parentView); if (parentView) { targetDocumentWidget = parentView->GetNearestWidget(nsnull); } } if (!targetDocumentWidget) { // We aren't inside a popup. This means we should use the root view's // widget. nsIViewManager* viewManagerTarget = shell->GetViewManager(); if ( viewManagerTarget ) { nsIView* rootViewTarget; viewManagerTarget->GetRootView(rootViewTarget); if ( rootViewTarget ) { targetDocumentWidget = rootViewTarget->GetNearestWidget(nsnull); } } } } } } //NS_ASSERTION(targetDocumentWidget, "ACK, BAD TARGET"); // the offset we need is the difference between the upper left corner of the two widgets. Use // screen coordinates to find the global offset between them. nsRect popupDocTopLeft; if ( popupDocumentWidget ) { nsRect topLeftClient ( 0, 0, 10, 10 ); popupDocumentWidget->WidgetToScreen ( topLeftClient, popupDocTopLeft ); } nsRect targetDocTopLeft; if ( targetDocumentWidget ) { nsRect topLeftClient ( 0, 0, 10, 10 ); targetDocumentWidget->WidgetToScreen ( topLeftClient, targetDocTopLeft ); } nsPoint pixelOffset ( targetDocTopLeft.x - popupDocTopLeft.x, targetDocTopLeft.y - popupDocTopLeft.y ); nsPresContext* context = PresContext(); *outAdjX = nsPresContext::CSSPixelsToAppUnits(inClientX) + context->DevPixelsToAppUnits(pixelOffset.x); *outAdjY = nsPresContext::CSSPixelsToAppUnits(inClientY) + context->DevPixelsToAppUnits(pixelOffset.y); } // AdjustClientXYForNestedDocuments // // AdjustPositionForAnchorAlign // // Uses the |popupanchor| and |popupalign| attributes on the popup to move the popup around and // anchor it to its parent. |outFlushWithTopBottom| will be TRUE if the popup is flush with either // the top or bottom edge of its parent, and FALSE if it is flush with the left or right edge of // the parent. // void nsMenuPopupFrame::AdjustPositionForAnchorAlign ( PRInt32* ioXPos, PRInt32* ioYPos, const nsRect & inParentRect, const nsString& aPopupAnchor, const nsString& aPopupAlign, PRBool* outFlushWithTopBottom ) { nsAutoString popupAnchor(aPopupAnchor); nsAutoString popupAlign(aPopupAlign); if (GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) { if (popupAnchor.EqualsLiteral("topright")) popupAnchor.AssignLiteral("topleft"); else if (popupAnchor.EqualsLiteral("topleft")) popupAnchor.AssignLiteral("topright"); else if (popupAnchor.EqualsLiteral("bottomleft")) popupAnchor.AssignLiteral("bottomright"); else if (popupAnchor.EqualsLiteral("bottomright")) popupAnchor.AssignLiteral("bottomleft"); if (popupAlign.EqualsLiteral("topright")) popupAlign.AssignLiteral("topleft"); else if (popupAlign.EqualsLiteral("topleft")) popupAlign.AssignLiteral("topright"); else if (popupAlign.EqualsLiteral("bottomleft")) popupAlign.AssignLiteral("bottomright"); else if (popupAnchor.EqualsLiteral("bottomright")) popupAlign.AssignLiteral("bottomleft"); } // Adjust position for margins at the aligned corner nsMargin margin; GetStyleMargin()->GetMargin(margin); if (popupAlign.EqualsLiteral("topleft")) { *ioXPos += margin.left; *ioYPos += margin.top; } else if (popupAlign.EqualsLiteral("topright")) { *ioXPos += margin.right; *ioYPos += margin.top; } else if (popupAlign.EqualsLiteral("bottomleft")) { *ioXPos += margin.left; *ioYPos += margin.bottom; } else if (popupAlign.EqualsLiteral("bottomright")) { *ioXPos += margin.right; *ioYPos += margin.bottom; } if (popupAnchor.EqualsLiteral("topright") && popupAlign.EqualsLiteral("topleft")) { *ioXPos += inParentRect.width; } else if (popupAnchor.EqualsLiteral("topleft") && popupAlign.EqualsLiteral("topleft")) { *outFlushWithTopBottom = PR_TRUE; } else if (popupAnchor.EqualsLiteral("topright") && popupAlign.EqualsLiteral("bottomright")) { *ioXPos -= (mRect.width - inParentRect.width); *ioYPos -= mRect.height; *outFlushWithTopBottom = PR_TRUE; } else if (popupAnchor.EqualsLiteral("bottomright") && popupAlign.EqualsLiteral("bottomleft")) { *ioXPos += inParentRect.width; *ioYPos -= (mRect.height - inParentRect.height); } else if (popupAnchor.EqualsLiteral("bottomright") && popupAlign.EqualsLiteral("topright")) { *ioXPos -= (mRect.width - inParentRect.width); *ioYPos += inParentRect.height; *outFlushWithTopBottom = PR_TRUE; } else if (popupAnchor.EqualsLiteral("topleft") && popupAlign.EqualsLiteral("topright")) { *ioXPos -= mRect.width; } else if (popupAnchor.EqualsLiteral("topleft") && popupAlign.EqualsLiteral("bottomleft")) { *ioYPos -= mRect.height; *outFlushWithTopBottom = PR_TRUE; } else if (popupAnchor.EqualsLiteral("bottomleft") && popupAlign.EqualsLiteral("bottomright")) { *ioXPos -= mRect.width; *ioYPos -= (mRect.height - inParentRect.height); } else if (popupAnchor.EqualsLiteral("bottomleft") && popupAlign.EqualsLiteral("topleft")) { *ioYPos += inParentRect.height; *outFlushWithTopBottom = PR_TRUE; } else NS_WARNING ( "Hmmm, looks like you've hit a anchor/align case we weren't setup for." ); } // AdjustPositionForAnchorAlign // // IsMoreRoomOnOtherSideOfParent // // Determine if there is more room on the screen for the popup to live if it was positioned // on the flip side of the parent from the side it is flush against (ie, if it's top edge was // flush against the bottom, is there more room if its bottom edge were flush against the top) // PRBool nsMenuPopupFrame::IsMoreRoomOnOtherSideOfParent ( PRBool inFlushAboveBelow, PRInt32 inScreenViewLocX, PRInt32 inScreenViewLocY, const nsRect & inScreenParentFrameRect, PRInt32 inScreenTopTwips, PRInt32 inScreenLeftTwips, PRInt32 inScreenBottomTwips, PRInt32 inScreenRightTwips ) { PRBool switchSides = PR_FALSE; if ( inFlushAboveBelow ) { PRInt32 availAbove = inScreenParentFrameRect.y - inScreenTopTwips; PRInt32 availBelow = inScreenBottomTwips - (inScreenParentFrameRect.y + inScreenParentFrameRect.height) ; if ( inScreenViewLocY > inScreenParentFrameRect.y ) // view is now below parent switchSides = availAbove > availBelow; else switchSides = availBelow > availAbove; } else { PRInt32 availLeft = inScreenParentFrameRect.x - inScreenLeftTwips; PRInt32 availRight = inScreenRightTwips - (inScreenParentFrameRect.x + inScreenParentFrameRect.width) ; if ( inScreenViewLocX > inScreenParentFrameRect.x ) // view is now to the right of parent switchSides = availLeft > availRight; else switchSides = availRight > availLeft; } return switchSides; } // IsMoreRoomOnOtherSideOfParent // // MovePopupToOtherSideOfParent // // Move the popup to the other side of the parent (ie, if it the popup's top edge is flush against the // bottom of its parent, move the popup so that its bottom edge is now flush against the top of its // parent...same idea for left/right). // // NOTE: In moving the popup, it may need to change size in order to stay on the screen. This will // have the side effect of touching |mRect|. // void nsMenuPopupFrame::MovePopupToOtherSideOfParent ( PRBool inFlushAboveBelow, PRInt32* ioXPos, PRInt32* ioYPos, PRInt32* ioScreenViewLocX, PRInt32* ioScreenViewLocY, const nsRect & inScreenParentFrameRect, PRInt32 inScreenTopTwips, PRInt32 inScreenLeftTwips, PRInt32 inScreenBottomTwips, PRInt32 inScreenRightTwips ) { if ( inFlushAboveBelow ) { if ( *ioScreenViewLocY > inScreenParentFrameRect.y ) { // view is currently below parent // move it above. PRInt32 shiftDistY = inScreenParentFrameRect.height + mRect.height; *ioYPos -= shiftDistY; *ioScreenViewLocY -= shiftDistY; // trim it to fit. if ( *ioScreenViewLocY < inScreenTopTwips ) { PRInt32 trimY = inScreenTopTwips - *ioScreenViewLocY; *ioYPos += trimY; *ioScreenViewLocY += trimY; mRect.height -= trimY; } } else { // view is currently above parent // move it below PRInt32 shiftDistY = inScreenParentFrameRect.height + mRect.height; *ioYPos += shiftDistY; *ioScreenViewLocY += shiftDistY; } } else { if ( *ioScreenViewLocX > inScreenParentFrameRect.x ) { // view is currently to the right of the parent // move it to the left. PRInt32 shiftDistX = inScreenParentFrameRect.width + mRect.width; *ioXPos -= shiftDistX; *ioScreenViewLocX -= shiftDistX; // trim it to fit. if ( *ioScreenViewLocX < inScreenLeftTwips ) { PRInt32 trimX = inScreenLeftTwips - *ioScreenViewLocX; *ioXPos += trimX; *ioScreenViewLocX += trimX; mRect.width -= trimX; } } else { // view is currently to the right of the parent // move it to the right PRInt32 shiftDistX = inScreenParentFrameRect.width + mRect.width; *ioXPos += shiftDistX; *ioScreenViewLocX += shiftDistX; } } } // MovePopupToOtherSideOfParent class nsASyncMenuActivation : public nsIReflowCallback { public: nsASyncMenuActivation(nsIContent* aContent) : mContent(aContent) { } virtual PRBool ReflowFinished() { PRBool shouldFlush = PR_FALSE; if (mContent && !mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::menuactive, nsGkAtoms::_true, eCaseMatters) && mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::menutobedisplayed, nsGkAtoms::_true, eCaseMatters)) { mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::menuactive, NS_LITERAL_STRING("true"), PR_TRUE); shouldFlush = PR_TRUE; } delete this; return shouldFlush; } nsCOMPtr mContent; }; nsresult nsMenuPopupFrame::SyncViewWithFrame(nsPresContext* aPresContext, const nsString& aPopupAnchor, const nsString& aPopupAlign, nsIFrame* aFrame, PRInt32 aXPos, PRInt32 aYPos) { NS_ENSURE_ARG(aPresContext); NS_ENSURE_ARG(aFrame); if (!mShouldAutoPosition && !mInContentShell) return NS_OK; // |containingView| // The view that contains the frame that is invoking this popup. This is // the canvas view inside the scrollport view. It can have negative bounds // if the canvas is scrolled so that part is off screen. nsIView* containingView = nsnull; nsPoint offset; nsMargin margin; containingView = aFrame->GetClosestView(&offset); if (!containingView) return NS_OK; // |view| // The root view for the popup window widget associated with this frame, // or, the view associated with this frame. nsIView* view = GetView(); // |parentPos| // The distance between the containingView and the root view. This provides // a hint as to where to position the menu relative to the window. nsPoint parentPos; GetViewOffset(containingView, parentPos); // |parentRect| // The dimensions of the frame invoking the popup. nsRect parentRect = aFrame->GetRect(); // get the document and the global script object nsIPresShell *presShell = aPresContext->PresShell(); nsIDocument *document = presShell->GetDocument(); PRBool sizedToPopup = (mContent->Tag() != nsGkAtoms::tooltip) && (nsMenuFrame::IsSizedToPopup(aFrame->GetContent(), PR_FALSE)); // If we stick to our parent's width, set it here before we move the // window around, because moving is done with respect to the width... if (sizedToPopup) { mRect.width = parentRect.width; } // |xpos| and |ypos| hold the x and y positions of where the popup will be moved to, // in _twips_, in the coordinate system of the _parent view_. PRInt32 xpos = 0, ypos = 0; // if we are anchored to our parent, there are certain things we don't want to do // when repositioning the view to fit on the screen, such as end up positioned over // the parent. When doing this reposition, we want to move the popup to the side with // the most room. The combination of anchor and alignment dictate if we readjst // above/below or to the left/right. PRBool anchoredToParent = PR_FALSE; PRBool readjustAboveBelow = PR_FALSE; if ( aXPos != -1 || aYPos != -1 ) { // for this case, we've been handed a specific x/y location (in client coordinates) for // the popup. However, we may be deeply nested in a frameset, etc and so the client coordinates // need some adjusting. nsCOMPtr xulDoc ( do_QueryInterface(document) ); AdjustClientXYForNestedDocuments ( xulDoc, presShell, aXPos, aYPos, &xpos, &ypos ); // Add in the top and left margins GetStyleMargin()->GetMargin(margin); xpos += margin.left; ypos += margin.top; } else { anchoredToParent = PR_TRUE; xpos = parentPos.x + offset.x; ypos = parentPos.y + offset.y; // move the popup according to the anchor/alignment attributes. This will also tell us // which axis the popup is flush against in case we have to move it around later. AdjustPositionForAnchorAlign ( &xpos, &ypos, parentRect, aPopupAnchor, aPopupAlign, &readjustAboveBelow ); } // Compute info about the screen dimensions. Because of multiple monitor systems, // the left or top sides of the screen may be in negative space (main monitor is on the // right, etc). We need to be sure to do the right thing. nsPIDOMWindow *window = document->GetWindow(); if (!window) return NS_OK; nsIDeviceContext* devContext = PresContext()->DeviceContext(); nsRect rect; if ( mMenuCanOverlapOSBar ) { devContext->GetRect(rect); } else { devContext->GetClientRect(rect); } // keep 3px margin to the right and bottom of the screen for WinXP dropshadow rect.width -= nsPresContext::CSSPixelsToAppUnits(3); rect.height -= nsPresContext::CSSPixelsToAppUnits(3); // for content shells, clip to the client area rather than the screen area if (mInContentShell) { nsRect rootScreenRect = presShell->GetRootFrame()->GetScreenRect(); rootScreenRect.ScaleRoundIn(aPresContext->AppUnitsPerDevPixel()); rect.IntersectRect(rect, rootScreenRect); } PRInt32 screenLeftTwips = rect.x; PRInt32 screenTopTwips = rect.y; PRInt32 screenWidthTwips = rect.width; PRInt32 screenHeightTwips = rect.height; PRInt32 screenRightTwips = rect.XMost(); PRInt32 screenBottomTwips = rect.YMost(); // Recall that |xpos| and |ypos| are in the coordinate system of the parent view. In // order to determine the screen coordinates of where our view will end up, we // need to find the x/y position of the parent view in screen coords. That is done // by getting the widget associated with the parent view and determining the offset // based on converting (0,0) in its coordinate space to screen coords. We then // offset that point by (|xpos|,|ypos|) to get the true screen coordinates of // the view. *whew* // |parentView| // The root view for the window that contains the frame, for frames inside // menupopups this is the first view inside the popup window widget, for // frames inside a toplevel window, this is the root view of the toplevel // window. nsIView* parentView = nsnull; GetRootViewForPopup(aFrame, PR_FALSE, &parentView); if (!parentView) return NS_OK; // Use containingView instead of parentView, to account for the scrollarrows // that a parent menu might have. nsPoint parentViewWidgetOffset; nsIWidget* parentViewWidget = containingView->GetNearestWidget(&parentViewWidgetOffset); nsRect localParentWidgetRect(0,0,0,0), screenParentWidgetRect; parentViewWidget->WidgetToScreen ( localParentWidgetRect, screenParentWidgetRect ); PRInt32 screenViewLocX = aPresContext->DevPixelsToAppUnits(screenParentWidgetRect.x) + (xpos - parentPos.x) + parentViewWidgetOffset.x; PRInt32 screenViewLocY = aPresContext->DevPixelsToAppUnits(screenParentWidgetRect.y) + (ypos - parentPos.y) + parentViewWidgetOffset.y; if ( anchoredToParent ) { // // Popup is anchored to the parent, guarantee that it does not cover the parent. We // shouldn't do anything funky if it will already fit on the screen as is. // /////////////////////////////////////////////////////////////////////////////// // // +------------------------+ // | /\ | // parentPos -> - +------------------------+ // | | | // offset | | | // | | | // | | | (screenViewLocX,screenViewLocY) // - |========================|+-------------- // | parentRect > || // |========================|| // | || Submenu // +------------------------+| ( = mRect ) // | \/ || // +------------------------+ // compute screen coordinates of parent frame so we can play with it. Make sure we put it // into twips as everything else is as well. nsRect screenParentFrameRect (aPresContext->AppUnitsToDevPixels(offset.x), aPresContext->AppUnitsToDevPixels(offset.y), parentRect.width, parentRect.height ); parentViewWidget->WidgetToScreen ( screenParentFrameRect, screenParentFrameRect ); screenParentFrameRect.x = aPresContext->DevPixelsToAppUnits(screenParentFrameRect.x); screenParentFrameRect.y = aPresContext->DevPixelsToAppUnits(screenParentFrameRect.y); // Don't let it spill off the screen to the top if (screenViewLocY < screenTopTwips) { PRInt32 moveDist = screenTopTwips - screenViewLocY; screenViewLocY = screenTopTwips; ypos += moveDist; } // if it doesn't fit on the screen, do our magic. if ( (screenViewLocX + mRect.width) > screenRightTwips || screenViewLocX < screenLeftTwips || (screenViewLocY + mRect.height) > screenBottomTwips ) { // figure out which side of the parent has the most free space so we can move/resize // the popup there. This should still work if the parent frame is partially screen. PRBool switchSides = IsMoreRoomOnOtherSideOfParent ( readjustAboveBelow, screenViewLocX, screenViewLocY, screenParentFrameRect, screenTopTwips, screenLeftTwips, screenBottomTwips, screenRightTwips ); // move the popup to the correct side, if necessary. Note that MovePopupToOtherSideOfParent() // can change width/height of |mRect|. if ( switchSides ) MovePopupToOtherSideOfParent ( readjustAboveBelow, &xpos, &ypos, &screenViewLocX, &screenViewLocY, screenParentFrameRect, screenTopTwips, screenLeftTwips, screenBottomTwips, screenRightTwips ); // We are allowed to move the popup along the axis to which we're not anchored to the parent // in order to get it to not spill off the screen. if ( readjustAboveBelow ) { // move left to be on screen, but don't let it go off the screen at the left if ( (screenViewLocX + mRect.width) > screenRightTwips ) { PRInt32 moveDistX = (screenViewLocX + mRect.width) - screenRightTwips; if ( screenViewLocX - moveDistX < screenLeftTwips ) moveDistX = screenViewLocX - screenLeftTwips; screenViewLocX -= moveDistX; xpos -= moveDistX; } else if (screenViewLocX < screenLeftTwips) { // move right to be on screen, but don't let it go off the screen at the right PRInt32 moveDistX = screenLeftTwips - screenViewLocX; if ( (screenViewLocX + mRect.width + moveDistX) > screenRightTwips ) moveDistX = screenRightTwips - screenViewLocX - mRect.width; screenViewLocX += moveDistX; xpos += moveDistX; } } else { // move it up to be on screen, but don't let it go off the screen at the top /* * | * | * |+---- screenViewLocY * || * || Submenu ( = mRect ) * -+| * | * | * - - - - - - - - - - screenBottomTwips (bottom of the screen) * | \ * | } moveDistY * | / * +---- screenViewLocY + mRect.height */ if ( (screenViewLocY + mRect.height) > screenBottomTwips ) { // XXX Bug 84121 comment 48 says the next line has to use screenHeightTwips, why not screenBottomTwips? PRInt32 moveDistY = (screenViewLocY + mRect.height) - screenHeightTwips; if ( screenViewLocY - moveDistY < screenTopTwips ) moveDistY = screenViewLocY - screenTopTwips; screenViewLocY -= moveDistY; ypos -= moveDistY; } } // Resize it to fit on the screen. By this point, we've given the popup as much // room as we can w/out covering the parent. If it still can't be as big // as it wants to be, well, it just has to suck up and deal. // // ySpillage is calculated the same way as moveDistY above. see picture there. PRInt32 xSpillage = (screenViewLocX + mRect.width) - screenRightTwips; if ( xSpillage > 0 ) mRect.width -= xSpillage; PRInt32 ySpillage = (screenViewLocY + mRect.height) - screenBottomTwips; if ( ySpillage > 0 ) mRect.height -= ySpillage; // shrink to fit onto the screen, vertically and horizontally if(mRect.width > screenWidthTwips) mRect.width = screenWidthTwips; if(mRect.height > screenHeightTwips) mRect.height = screenHeightTwips; } // if it doesn't fit on screen } // if anchored to parent else { // // Popup not anchored to anything, just make sure it's on the screen by any // means necessary // // If you decide to mess with this code in some way other than just // converting it to be just like the anchored codepath, please make sure to // not regress bug 120226, bug 172530, bug 245163. // XXXbz this is really silly. We should be able to anchor popups to a // point or rect, not a frame, and we should be doing so with context // menus. Furthermore, we should not be adding in pixels manually to // adjust position (in XULPopupListenerImpl::LaunchPopup comes to mind, // though ConvertPosition in the same file has some 21-px bogosity in the // y-direction too). // shrink to fit onto the screen, vertically and horizontally if(mRect.width > screenWidthTwips) mRect.width = screenWidthTwips; if(mRect.height > screenHeightTwips) mRect.height = screenHeightTwips; // First, adjust the X position. For the X position, we slide the popup // left or right as needed to get it on screen. if ( screenViewLocX < screenLeftTwips ) { PRInt32 moveDistX = screenLeftTwips - screenViewLocX; xpos += moveDistX; screenViewLocX += moveDistX; } if ( (screenViewLocX + mRect.width) > screenRightTwips ) xpos -= (screenViewLocX + mRect.width) - screenRightTwips; // Now the Y position. If the popup is up too high, slide it down so it's // on screen. if ( screenViewLocY < screenTopTwips ) { PRInt32 moveDistY = screenTopTwips - screenViewLocY; ypos += moveDistY; screenViewLocY += moveDistY; } // Now if the popup extends down too far, either resize it or flip it to be // above the anchor point and resize it to fit above, depending on where we // have more room. if ( (screenViewLocY + mRect.height) > screenBottomTwips ) { // XXXbz it'd be good to make use of IsMoreRoomOnOtherSideOfParent and // such here, but that's really focused on having a nonempty parent // rect... if (screenBottomTwips - screenViewLocY > screenViewLocY - screenTopTwips) { // More space below our desired point. Resize to fit in this space. // Note that this is making mRect smaller; othewise we would not have // reached this code. mRect.height = screenBottomTwips - screenViewLocY; } else { // More space above our desired point. Flip and resize to fit in this // space. if (mRect.height > screenViewLocY - screenTopTwips) { // We wouldn't fit. Shorten before flipping. mRect.height = screenViewLocY - screenTopTwips; } ypos -= (mRect.height + margin.top + margin.bottom); } } } aPresContext->GetViewManager()->MoveViewTo(view, xpos, ypos); // Now that we've positioned the view, sync up the frame's origin. nsPoint frameOrigin = GetPosition(); nsPoint offsetToView; GetOriginToViewOffset(offsetToView, nsnull); frameOrigin -= offsetToView; nsBoxFrame::SetPosition(frameOrigin); if (sizedToPopup) { nsBoxLayoutState state(PresContext()); SetBounds(state, nsRect(mRect.x, mRect.y, parentRect.width, mRect.height)); } if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::menuactive, nsGkAtoms::_true, eCaseMatters) && mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::menutobedisplayed, nsGkAtoms::_true, eCaseMatters)) { nsIReflowCallback* cb = new nsASyncMenuActivation(mContent); NS_ENSURE_TRUE(cb, NS_ERROR_OUT_OF_MEMORY); PresContext()->PresShell()->PostReflowCallback(cb); } return NS_OK; } static void GetInsertionPoint(nsIPresShell* aShell, nsIFrame* aFrame, nsIFrame* aChild, nsIFrame** aResult) { nsIContent* child = nsnull; if (aChild) child = aChild->GetContent(); aShell->FrameConstructor()->GetInsertionPoint(aFrame, child, aResult); } /* virtual */ nsIMenuFrame* nsMenuPopupFrame::GetNextMenuItem(nsIMenuFrame* aStart) { nsIFrame* immediateParent = nsnull; GetInsertionPoint(PresContext()->PresShell(), this, nsnull, &immediateParent); if (!immediateParent) immediateParent = this; nsIFrame* currFrame = nsnull; nsIFrame* startFrame = nsnull; if (aStart) { aStart->QueryInterface(NS_GET_IID(nsIFrame), (void**)&currFrame); if (currFrame) { startFrame = currFrame; currFrame = currFrame->GetNextSibling(); } } else currFrame = immediateParent->GetFirstChild(nsnull); while (currFrame) { // See if it's a menu item. if (IsValidItem(currFrame->GetContent())) { nsIMenuFrame *menuFrame; if (NS_FAILED(CallQueryInterface(currFrame, &menuFrame))) menuFrame = nsnull; return menuFrame; } currFrame = currFrame->GetNextSibling(); } currFrame = immediateParent->GetFirstChild(nsnull); // Still don't have anything. Try cycling from the beginning. while (currFrame && currFrame != startFrame) { // See if it's a menu item. if (IsValidItem(currFrame->GetContent())) { nsIMenuFrame *menuFrame; if (NS_FAILED(CallQueryInterface(currFrame, &menuFrame))) menuFrame = nsnull; return menuFrame; } currFrame = currFrame->GetNextSibling(); } // No luck. Just return our start value. return aStart; } /* virtual */ nsIMenuFrame* nsMenuPopupFrame::GetPreviousMenuItem(nsIMenuFrame* aStart) { nsIFrame* immediateParent = nsnull; GetInsertionPoint(PresContext()->PresShell(), this, nsnull, &immediateParent); if (!immediateParent) immediateParent = this; nsFrameList frames(immediateParent->GetFirstChild(nsnull)); nsIFrame* currFrame = nsnull; nsIFrame* startFrame = nsnull; if (aStart) { aStart->QueryInterface(NS_GET_IID(nsIFrame), (void**)&currFrame); if (currFrame) { startFrame = currFrame; currFrame = frames.GetPrevSiblingFor(currFrame); } } else currFrame = frames.LastChild(); while (currFrame) { // See if it's a menu item. if (IsValidItem(currFrame->GetContent())) { nsIMenuFrame *menuFrame; if (NS_FAILED(CallQueryInterface(currFrame, &menuFrame))) menuFrame = nsnull; return menuFrame; } currFrame = frames.GetPrevSiblingFor(currFrame); } currFrame = frames.LastChild(); // Still don't have anything. Try cycling from the end. while (currFrame && currFrame != startFrame) { // See if it's a menu item. if (IsValidItem(currFrame->GetContent())) { nsIMenuFrame *menuFrame; if (NS_FAILED(CallQueryInterface(currFrame, &menuFrame))) menuFrame = nsnull; return menuFrame; } currFrame = frames.GetPrevSiblingFor(currFrame); } // No luck. Just return our start value. return aStart; } /* virtual */ nsIMenuFrame* nsMenuPopupFrame::GetCurrentMenuItem() { return mCurrentMenu; } NS_IMETHODIMP nsMenuPopupFrame::ConsumeOutsideClicks(PRBool& aConsumeOutsideClicks) { /* * When this popup is open, should clicks outside of it be consumed? * Return PR_TRUE if the popup hould rollup on an outside click, * but consume that click so it can't be used for anything else. * Return PR_FALSE to allow clicks outside the popup to activate content * even when the popup is open. * --------------------------------------------------------------------- * * Should clicks outside of a popup be eaten? * * Menus Autocomplete Comboboxes * Mac Eat No Eat * Win No No Eat * Unix Eat No Eat * */ // If the popup has explicitly set a consume mode, honor that. if (mConsumeRollupEvent != nsIPopupBoxObject::ROLLUP_DEFAULT) { aConsumeOutsideClicks = mConsumeRollupEvent == nsIPopupBoxObject::ROLLUP_CONSUME; return NS_OK; } aConsumeOutsideClicks = PR_TRUE; nsCOMPtr parentContent = mContent->GetParent(); if (parentContent) { nsIAtom *parentTag = parentContent->Tag(); if (parentTag == nsGkAtoms::menulist) return NS_OK; // Consume outside clicks for combo boxes on all platforms if (parentTag == nsGkAtoms::menu || parentTag == nsGkAtoms::popupset) { #if defined(XP_WIN) || defined(XP_OS2) // Don't consume outside clicks for menus in Windows aConsumeOutsideClicks = PR_FALSE; #endif return NS_OK; } if (parentTag == nsGkAtoms::textbox) { // Don't consume outside clicks for autocomplete widget if (parentContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::autocomplete, eCaseMatters)) aConsumeOutsideClicks = PR_FALSE; } } return NS_OK; } static nsIScrollableView* GetScrollableViewForFrame(nsIFrame* aFrame) { nsIScrollableFrame* sf; nsresult rv = CallQueryInterface(aFrame, &sf); if (NS_FAILED(rv)) return nsnull; return sf->GetScrollableView(); } // XXXroc this is megalame. Fossicking around for a view of the right // type is a recipe for disaster in the long term. nsIScrollableView* nsMenuPopupFrame::GetScrollableView(nsIFrame* aStart) { if ( ! aStart ) return nsnull; nsIFrame* currFrame; nsIScrollableView* scrollableView=nsnull; // try start frame and siblings currFrame=aStart; do { scrollableView = GetScrollableViewForFrame(currFrame); if ( scrollableView ) return scrollableView; currFrame = currFrame->GetNextSibling(); } while ( currFrame ); // try children nsIFrame* childFrame; currFrame=aStart; do { childFrame = currFrame->GetFirstChild(nsnull); scrollableView=GetScrollableView(childFrame); if ( scrollableView ) return scrollableView; currFrame = currFrame->GetNextSibling(); } while ( currFrame ); return nsnull; } void nsMenuPopupFrame::EnsureMenuItemIsVisible(nsIMenuFrame* aMenuItem) { nsIFrame* frame=nsnull; aMenuItem->QueryInterface(NS_GET_IID(nsIFrame), (void**)&frame); if ( frame ) { nsIFrame* childFrame=nsnull; childFrame = GetFirstChild(nsnull); nsIScrollableView *scrollableView; scrollableView=GetScrollableView(childFrame); if ( scrollableView ) { nscoord scrollX, scrollY; nsRect viewRect = scrollableView->View()->GetBounds(); nsRect itemRect = frame->GetRect(); scrollableView->GetScrollPosition(scrollX, scrollY); // scroll down if ( itemRect.y + itemRect.height > scrollY + viewRect.height ) scrollableView->ScrollTo(scrollX, itemRect.y + itemRect.height - viewRect.height, NS_SCROLL_PROPERTY_ALWAYS_BLIT); // scroll up else if ( itemRect.y < scrollY ) scrollableView->ScrollTo(scrollX, itemRect.y, NS_SCROLL_PROPERTY_ALWAYS_BLIT); } } } NS_IMETHODIMP nsMenuPopupFrame::SetCurrentMenuItem(nsIMenuFrame* aMenuItem) { // When a context menu is open, the current menu is locked, and no change // to the menu is allowed. nsIMenuParent *contextMenu = GetContextMenu(); if (contextMenu) return NS_OK; if (mCurrentMenu == aMenuItem) return NS_OK; // Unset the current child. if (mCurrentMenu) { PRBool isOpen = PR_FALSE; mCurrentMenu->MenuIsOpen(isOpen); mCurrentMenu->SelectMenu(PR_FALSE); // XXX bug 294183 sometimes mCurrentMenu gets cleared if (mCurrentMenu && isOpen) { // Don't close up immediately. // Kick off a close timer. KillCloseTimer(); // Ensure we don't have another stray waiting closure. PRInt32 menuDelay = 300; // ms PresContext()->LookAndFeel()-> GetMetric(nsILookAndFeel::eMetric_SubmenuDelay, menuDelay); // Kick off the timer. mCloseTimer = do_CreateInstance("@mozilla.org/timer;1"); mCloseTimer->InitWithCallback(mTimerMediator, menuDelay, nsITimer::TYPE_ONE_SHOT); mTimerMenu = mCurrentMenu; } } // Set the new child. if (aMenuItem) { EnsureMenuItemIsVisible(aMenuItem); aMenuItem->SelectMenu(PR_TRUE); } mCurrentMenu = aMenuItem; return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::Escape(PRBool& aHandledFlag) { mIncrementalString.Truncate(); // See if we have a context menu open. nsIMenuParent* contextMenu = GetContextMenu(); if (contextMenu) { // Get the context menu parent. nsIFrame* childFrame; CallQueryInterface(contextMenu, &childFrame); nsIPopupSetFrame* popupSetFrame = GetPopupSetFrame(PresContext()); if (popupSetFrame) // Destroy the popup. popupSetFrame->DestroyPopup(childFrame, PR_FALSE); aHandledFlag = PR_TRUE; return NS_OK; } if (!mCurrentMenu) return NS_OK; // See if our menu is open. PRBool isOpen = PR_FALSE; mCurrentMenu->MenuIsOpen(isOpen); if (isOpen) { // Let the child menu handle this. mCurrentMenu->Escape(aHandledFlag); if (!aHandledFlag) { // We should close up. mCurrentMenu->OpenMenu(PR_FALSE); // SelectMenu() so DOMMenuItemActive is fired for accessibility mCurrentMenu->SelectMenu(PR_TRUE); aHandledFlag = PR_TRUE; } } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::Enter() { mIncrementalString.Truncate(); // See if we have a context menu open. nsIMenuParent *contextMenu = GetContextMenu(); if (contextMenu) return contextMenu->Enter(); // Give it to the child. if (mCurrentMenu) mCurrentMenu->Enter(); return NS_OK; } nsIMenuParent* nsMenuPopupFrame::GetContextMenu() { if (mIsContextMenu) return nsnull; return nsMenuFrame::GetContextMenu(); } nsIMenuFrame* nsMenuPopupFrame::FindMenuWithShortcut(nsIDOMKeyEvent* aKeyEvent, PRBool& doAction) { PRUint32 charCode, keyCode; aKeyEvent->GetCharCode(&charCode); aKeyEvent->GetKeyCode(&keyCode); doAction = PR_FALSE; // Enumerate over our list of frames. nsIFrame* immediateParent = nsnull; GetInsertionPoint(PresContext()->PresShell(), this, nsnull, &immediateParent); if (!immediateParent) immediateParent = this; PRUint32 matchCount = 0, matchShortcutCount = 0; PRBool foundActive = PR_FALSE; PRBool isShortcut; nsIMenuFrame* frameBefore = nsnull; nsIMenuFrame* frameAfter = nsnull; nsIMenuFrame* frameShortcut = nsnull; nsIContent* parentContent = mContent->GetParent(); PRBool isMenu = parentContent && parentContent->Tag() != nsGkAtoms::menulist; static DOMTimeStamp lastKeyTime = 0; DOMTimeStamp keyTime; aKeyEvent->GetTimeStamp(&keyTime); if (charCode == 0) { if (keyCode == NS_VK_BACK) { if (!isMenu && !mIncrementalString.IsEmpty()) { mIncrementalString.SetLength(mIncrementalString.Length() - 1); return nsnull; } else { #ifdef XP_WIN nsCOMPtr soundInterface = do_CreateInstance("@mozilla.org/sound;1"); if (soundInterface) soundInterface->Beep(); #endif // #ifdef XP_WIN } } return nsnull; } else { PRUnichar uniChar = ToLowerCase(NS_STATIC_CAST(PRUnichar, charCode)); if (isMenu || // Menu supports only first-letter navigation keyTime - lastKeyTime > INC_TYP_INTERVAL) // Interval too long, treat as new typing mIncrementalString = uniChar; else { mIncrementalString.Append(uniChar); } } // See bug 188199 & 192346, if all letters in incremental string are same, just try to match the first one nsAutoString incrementalString(mIncrementalString); PRUint32 charIndex = 1, stringLength = incrementalString.Length(); while (charIndex < stringLength && incrementalString[charIndex] == incrementalString[charIndex - 1]) { charIndex++; } if (charIndex == stringLength) { incrementalString.Truncate(1); stringLength = 1; } lastKeyTime = keyTime; nsIFrame* currFrame; // NOTE: If you crashed here due to a bogus |immediateParent| it is // possible that the menu whose shortcut is being looked up has // been destroyed already. One strategy would be to // setTimeout(,0) as detailed in: // currFrame = immediateParent->GetFirstChild(nsnull); // We start searching from first child. This process is divided into two parts // -- before current and after current -- by the current item while (currFrame) { nsIContent* current = currFrame->GetContent(); // See if it's a menu item. if (IsValidItem(current)) { nsAutoString textKey; // Get the shortcut attribute. current->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, textKey); if (textKey.IsEmpty()) { // No shortcut, try first letter isShortcut = PR_FALSE; current->GetAttr(kNameSpaceID_None, nsGkAtoms::label, textKey); if (textKey.IsEmpty()) // No label, try another attribute (value) current->GetAttr(kNameSpaceID_None, nsGkAtoms::value, textKey); } else isShortcut = PR_TRUE; if (StringBeginsWith(textKey, incrementalString, nsCaseInsensitiveStringComparator())) { // mIncrementalString is a prefix of textKey nsIMenuFrame* menuFrame; if (NS_SUCCEEDED(CallQueryInterface(currFrame, &menuFrame))) { // There is one match matchCount++; if (isShortcut) { // There is one shortcut-key match matchShortcutCount++; // Record the matched item. If there is only one matched shortcut item, do it frameShortcut = menuFrame; } if (!foundActive) { // It's a first candidate item located before/on the current item if (!frameBefore) frameBefore = menuFrame; } else { // It's a first candidate item located after the current item if (!frameAfter) frameAfter = menuFrame; } } else return nsnull; } // Get the active status if (current->AttrValueIs(kNameSpaceID_None, nsGkAtoms::menuactive, nsGkAtoms::_true, eCaseMatters)) { foundActive = PR_TRUE; if (stringLength > 1) { // If there is more than one char typed, the current item has highest priority, // otherwise the item next to current has highest priority nsIMenuFrame* menuFrame; if (NS_SUCCEEDED(CallQueryInterface(currFrame, &menuFrame)) && menuFrame == frameBefore) { return frameBefore; } } } } currFrame = currFrame->GetNextSibling(); } doAction = (isMenu && (matchCount == 1 || matchShortcutCount == 1)); if (matchShortcutCount == 1) // We have one matched shortcut item return frameShortcut; if (frameAfter) // If we have matched item after the current, use it return frameAfter; else if (frameBefore) // If we haven't, use the item before the current return frameBefore; // If we don't match anything, rollback the last typing mIncrementalString.SetLength(mIncrementalString.Length() - 1); // didn't find a matching menu item #ifdef XP_WIN // behavior on Windows - this item is in a menu popup off of the // menu bar, so beep and do nothing else if (isMenu) { nsCOMPtr soundInterface = do_CreateInstance("@mozilla.org/sound;1"); if (soundInterface) soundInterface->Beep(); } #endif // #ifdef XP_WIN return nsnull; } NS_IMETHODIMP nsMenuPopupFrame::ShortcutNavigation(nsIDOMKeyEvent* aKeyEvent, PRBool& aHandledFlag) { // See if we have a context menu open. nsIMenuParent *contextMenu = GetContextMenu(); if (contextMenu) return contextMenu->ShortcutNavigation(aKeyEvent, aHandledFlag); if (mCurrentMenu) { PRBool isOpen = PR_FALSE; mCurrentMenu->MenuIsOpen(isOpen); if (isOpen) { // No way this applies to us. Give it to our child. mCurrentMenu->ShortcutNavigation(aKeyEvent, aHandledFlag); return NS_OK; } } // This applies to us. Let's see if one of the shortcuts applies PRBool action; nsIMenuFrame* result = FindMenuWithShortcut(aKeyEvent, action); if (result) { // We got one! nsIFrame* frame = nsnull; CallQueryInterface(result, &frame); nsWeakFrame weakResult(frame); aHandledFlag = PR_TRUE; SetCurrentMenuItem(result); if (action && weakResult.IsAlive()) { result->Enter(); } } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::KeyboardNavigation(PRUint32 aKeyCode, PRBool& aHandledFlag) { // See if we have a context menu open. nsIMenuParent *contextMenu = GetContextMenu(); if (contextMenu) return contextMenu->KeyboardNavigation(aKeyCode, aHandledFlag); nsNavigationDirection theDirection; NS_DIRECTION_FROM_KEY_CODE(theDirection, aKeyCode); mIncrementalString.Truncate(); // This method only gets called if we're open. if (!mCurrentMenu && NS_DIRECTION_IS_INLINE(theDirection)) { // We've been opened, but we haven't had anything selected. // We can handle End, but our parent handles Start. if (theDirection == eNavigationDirection_End) { nsIMenuFrame* nextItem = GetNextMenuItem(nsnull); if (nextItem) { aHandledFlag = PR_TRUE; SetCurrentMenuItem(nextItem); } } return NS_OK; } PRBool isContainer = PR_FALSE; PRBool isOpen = PR_FALSE; PRBool isDisabled = PR_FALSE; nsWeakFrame weakFrame(this); if (mCurrentMenu) { mCurrentMenu->MenuIsContainer(isContainer); mCurrentMenu->MenuIsOpen(isOpen); mCurrentMenu->MenuIsDisabled(isDisabled); if (isOpen) { // Give our child a shot. mCurrentMenu->KeyboardNavigation(aKeyCode, aHandledFlag); NS_ENSURE_TRUE(weakFrame.IsAlive(), NS_OK); } else if (theDirection == eNavigationDirection_End && isContainer && !isDisabled) { // The menu is not yet open. Open it and select the first item. aHandledFlag = PR_TRUE; nsIFrame* frame = nsnull; CallQueryInterface(mCurrentMenu, &frame); nsWeakFrame weakCurrentFrame(frame); mCurrentMenu->OpenMenu(PR_TRUE); NS_ENSURE_TRUE(weakCurrentFrame.IsAlive(), NS_OK); mCurrentMenu->SelectFirstItem(); NS_ENSURE_TRUE(weakFrame.IsAlive(), NS_OK); } } if (aHandledFlag) return NS_OK; // The child menu took it for us. // For block progression, we can move in either direction if (NS_DIRECTION_IS_BLOCK(theDirection) || NS_DIRECTION_IS_BLOCK_TO_EDGE(theDirection)) { nsIMenuFrame* nextItem; if (theDirection == eNavigationDirection_Before) nextItem = GetPreviousMenuItem(mCurrentMenu); else if (theDirection == eNavigationDirection_After) nextItem = GetNextMenuItem(mCurrentMenu); else if (theDirection == eNavigationDirection_First) nextItem = GetNextMenuItem(nsnull); else nextItem = GetPreviousMenuItem(nsnull); if (nextItem) { aHandledFlag = PR_TRUE; SetCurrentMenuItem(nextItem); } } else if (mCurrentMenu && isContainer && isOpen) { if (theDirection == eNavigationDirection_Start) { // Close it up. mCurrentMenu->OpenMenu(PR_FALSE); NS_ENSURE_TRUE(weakFrame.IsAlive(), NS_OK); // SelectMenu() so DOMMenuItemActive is fired for accessibility mCurrentMenu->SelectMenu(PR_TRUE); aHandledFlag = PR_TRUE; } } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::GetParentPopup(nsIMenuParent** aMenuParent) { *aMenuParent = nsnull; nsIFrame* parent = GetParent(); while (parent) { nsCOMPtr menuParent = do_QueryInterface(parent); if (menuParent) { *aMenuParent = menuParent.get(); NS_ADDREF(*aMenuParent); return NS_OK; } parent = parent->GetParent(); } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::HideChain() { if (!mShouldRollup) return NS_OK; // Stop capturing rollups // (must do this during Hide, which happens before the menu item is executed, // since this reinstates normal event handling.) nsMenuDismissalListener::Shutdown(); nsIFrame* frame = GetParent(); if (frame) { nsWeakFrame weakMenu(frame); nsIMenuFrame* menuFrame; if (NS_FAILED(CallQueryInterface(frame, &menuFrame))) { nsIPopupSetFrame* popupSetFrame = GetPopupSetFrame(PresContext()); if (popupSetFrame) // Hide the popup. popupSetFrame->HidePopup(this); return NS_OK; } menuFrame->ActivateMenu(PR_FALSE); NS_ENSURE_TRUE(weakMenu.IsAlive(), NS_OK); menuFrame->SelectMenu(PR_FALSE); NS_ENSURE_TRUE(weakMenu.IsAlive(), NS_OK); // Get the parent. nsIMenuParent *menuParent = menuFrame->GetMenuParent(); if (menuParent) menuParent->HideChain(); } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::DismissChain() { if (!mShouldRollup) return NS_OK; // Stop capturing rollups nsMenuDismissalListener::Shutdown(); // Get our menu parent. nsIFrame* frame = GetParent(); if (frame) { nsIMenuFrame *menuFrame = nsnull; CallQueryInterface(frame, &menuFrame); if (!menuFrame) { nsIPopupSetFrame* popupSetFrame = GetPopupSetFrame(PresContext()); if (popupSetFrame) { // make sure the menu is not highlighted if (mCurrentMenu) { PRBool wasOpen; mCurrentMenu->MenuIsOpen(wasOpen); if (wasOpen) mCurrentMenu->OpenMenu(PR_FALSE); mCurrentMenu->SelectMenu(PR_FALSE); } // Destroy the popup. popupSetFrame->DestroyPopup(this, PR_TRUE); } return NS_OK; } menuFrame->OpenMenu(PR_FALSE); // Get the parent. nsIMenuParent* menuParent = menuFrame->GetMenuParent(); if (menuParent) menuParent->DismissChain(); } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::GetWidget(nsIWidget **aWidget) { // Get parent view nsIView * view = nsnull; // XXX should this be passing PR_FALSE or PR_TRUE for aStopAtViewManagerRoot? nsMenuPopupFrame::GetRootViewForPopup(this, PR_FALSE, &view); if (!view) return NS_OK; *aWidget = view->GetWidget(); NS_IF_ADDREF(*aWidget); return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::AttachedDismissalListener() { mConsumeRollupEvent = nsIPopupBoxObject::ROLLUP_DEFAULT; return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::InstallKeyboardNavigator() { if (mKeyboardNavigator) return NS_OK; nsCOMPtr target = do_QueryInterface(mContent->GetDocument()); mTarget = target; mKeyboardNavigator = new nsMenuListener(this); NS_IF_ADDREF(mKeyboardNavigator); target->AddEventListener(NS_LITERAL_STRING("keypress"), (nsIDOMKeyListener*)mKeyboardNavigator, PR_TRUE); target->AddEventListener(NS_LITERAL_STRING("keydown"), (nsIDOMKeyListener*)mKeyboardNavigator, PR_TRUE); target->AddEventListener(NS_LITERAL_STRING("keyup"), (nsIDOMKeyListener*)mKeyboardNavigator, PR_TRUE); nsContentUtils::NotifyInstalledMenuKeyboardListener(PR_TRUE); return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::RemoveKeyboardNavigator() { if (!mKeyboardNavigator) return NS_OK; mTarget->RemoveEventListener(NS_LITERAL_STRING("keypress"), (nsIDOMKeyListener*)mKeyboardNavigator, PR_TRUE); mTarget->RemoveEventListener(NS_LITERAL_STRING("keydown"), (nsIDOMKeyListener*)mKeyboardNavigator, PR_TRUE); mTarget->RemoveEventListener(NS_LITERAL_STRING("keyup"), (nsIDOMKeyListener*)mKeyboardNavigator, PR_TRUE); NS_IF_RELEASE(mKeyboardNavigator); nsContentUtils::NotifyInstalledMenuKeyboardListener(PR_FALSE); return NS_OK; } // helpers ///////////////////////////////////////////////////////////// PRBool nsMenuPopupFrame::IsValidItem(nsIContent* aContent) { nsIAtom *tag = aContent->Tag(); PRBool skipNavigatingDisabledMenuItem; PresContext()->LookAndFeel()-> GetMetric(nsILookAndFeel::eMetric_SkipNavigatingDisabledMenuItem, skipNavigatingDisabledMenuItem); PRBool result = (tag == nsGkAtoms::menu || tag == nsGkAtoms::menuitem || tag == nsGkAtoms::option); if (skipNavigatingDisabledMenuItem) result = result && !IsDisabled(aContent); return result; } PRBool nsMenuPopupFrame::IsDisabled(nsIContent* aContent) { return aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters); } NS_IMETHODIMP nsMenuPopupFrame::AttributeChanged(PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType) { nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType); if (aAttribute == nsGkAtoms::left || aAttribute == nsGkAtoms::top) MoveToAttributePosition(); return rv; } void nsMenuPopupFrame::MoveToAttributePosition() { // Move the widget around when the user sets the |left| and |top| attributes. // Note that this is not the best way to move the widget, as it results in lots // of FE notifications and is likely to be slow as molasses. Use |moveTo| on // nsIPopupBoxObject if possible. nsAutoString left, top; mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::left, left); mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::top, top); PRInt32 err1, err2, xPos, yPos; xPos = left.ToInteger(&err1); yPos = top.ToInteger(&err2); if (NS_SUCCEEDED(err1) && NS_SUCCEEDED(err2)) { MoveToInternal(xPos, yPos); } } NS_IMETHODIMP nsMenuPopupFrame::HandleEvent(nsPresContext* aPresContext, nsGUIEvent* aEvent, nsEventStatus* aEventStatus) { return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus); } void nsMenuPopupFrame::Destroy() { // Null out the pointer to this frame in the mediator wrapper so that it // doesn't try to interact with a deallocated frame. mTimerMediator->ClearFrame(); if (mCloseTimer) mCloseTimer->Cancel(); nsPresContext* rootPresContext = PresContext()->RootPresContext(); if (rootPresContext->ContainsActivePopup(this)) { rootPresContext->NotifyRemovedActivePopup(this); } RemoveKeyboardNavigator(); nsBoxFrame::Destroy(); } // REVIEW: The override here was doing nothing at all since nsBoxFrame is our // parent class // // Notify // // The item selection timer has fired, we might have to readjust the // selected item. There are two cases here that we are trying to deal with: // (1) diagonal movement from a parent menu to a submenu passing briefly over // other items, and // (2) moving out from a submenu to a parent or grandparent menu. // In both cases, |mTimerMenu| is the menu item that might have an open submenu and // |mCurrentMenu| is the item the mouse is currently over, which could be none of them. // // case (1): // As the mouse moves from the parent item of a submenu (we'll call 'A') diagonally into the // submenu, it probably passes through one or more sibilings (B). As the mouse passes // through B, it becomes the current menu item and the timer is set and mTimerMenu is // set to A. Before the timer fires, the mouse leaves the menu containing A and B and // enters the submenus. Now when the timer fires, |mCurrentMenu| is null (!= |mTimerMenu|) // so we have to see if anything in A's children is selected (recall that even disabled // items are selected, the style just doesn't show it). If that is the case, we need to // set the selected item back to A. // // case (2); // Item A has an open submenu, and in it there is an item (B) which also has an open // submenu (so there are 3 menus displayed right now). The mouse then leaves B's child // submenu and selects an item that is a sibling of A, call it C. When the mouse enters C, // the timer is set and |mTimerMenu| is A and |mCurrentMenu| is C. As the timer fires, // the mouse is still within C. The correct behavior is to set the current item to C // and close up the chain parented at A. // // This brings up the question of is the logic of case (1) enough? The answer is no, // and is discussed in bugzilla bug 29400. Case (1) asks if A's submenu has a selected // child, and if it does, set the selected item to A. Because B has a submenu open, it // is selected and as a result, A is set to be the selected item even though the mouse // rests in C -- very wrong. // // The solution is to use the same idea, but instead of only checking one level, // drill all the way down to the deepest open submenu and check if it has something // selected. Since the mouse is in a grandparent, it won't, and we know that we can // safely close up A and all its children. // // The code below melds the two cases together. // nsresult nsMenuPopupFrame::Notify(nsITimer* aTimer) { // Our timer has fired. if (aTimer == mCloseTimer.get()) { PRBool menuOpen = PR_FALSE; mTimerMenu->MenuIsOpen(menuOpen); if (menuOpen) mTimerMenu->OpenMenu(PR_FALSE); if (mCloseTimer) mCloseTimer->Cancel(); } mCloseTimer = nsnull; mTimerMenu = nsnull; return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::KillCloseTimer() { if (mCloseTimer && mTimerMenu) { PRBool menuOpen = PR_FALSE; mTimerMenu->MenuIsOpen(menuOpen); if (menuOpen) { mTimerMenu->OpenMenu(PR_FALSE); } mCloseTimer->Cancel(); mCloseTimer = nsnull; mTimerMenu = nsnull; } return NS_OK; } NS_IMETHODIMP nsMenuPopupFrame::KillPendingTimers ( ) { return KillCloseTimer(); } // KillPendingTimers NS_IMETHODIMP nsMenuPopupFrame::CancelPendingTimers() { if (mCloseTimer && mTimerMenu) { if (mTimerMenu != mCurrentMenu) { SetCurrentMenuItem(mTimerMenu); } mCloseTimer->Cancel(); mCloseTimer = nsnull; mTimerMenu = nsnull; } return NS_OK; } void nsMenuPopupFrame::MoveTo(PRInt32 aLeft, PRInt32 aTop) { // Set the 'left' and 'top' attributes nsAutoString left, top; left.AppendInt(aLeft); top.AppendInt(aTop); nsWeakFrame weakFrame(this); mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::left, left, PR_FALSE); if (!weakFrame.IsAlive()) { return; } mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::top, top, PR_FALSE); if (!weakFrame.IsAlive()) { return; } MoveToInternal(aLeft, aTop); } void nsMenuPopupFrame::MoveToInternal(PRInt32 aLeft, PRInt32 aTop) { // just don't support moving popups for content shells if (mInContentShell) return; nsIView* view = GetView(); NS_ASSERTION(view->GetParent(), "Must have parent!"); // Retrieve screen position of parent view nsIntPoint screenPos = view->GetParent()->GetScreenPosition(); // Move the widget // XXXbz don't we want screenPos to be the parent _widget_'s position, then? view->GetWidget()->Move(aLeft - screenPos.x, aTop - screenPos.y); } void nsMenuPopupFrame::GetAutoPosition(PRBool* aShouldAutoPosition) { *aShouldAutoPosition = mShouldAutoPosition; } void nsMenuPopupFrame::SetAutoPosition(PRBool aShouldAutoPosition) { mShouldAutoPosition = aShouldAutoPosition; } void nsMenuPopupFrame::EnableRollup(PRBool aShouldRollup) { if (!nsMenuDismissalListener::sInstance || nsMenuDismissalListener::sInstance->GetCurrentMenuParent() != this) return; if (aShouldRollup) nsMenuDismissalListener::sInstance->Register(); else nsMenuDismissalListener::sInstance->Unregister(); } void nsMenuPopupFrame::SetConsumeRollupEvent(PRUint32 aConsumeMode) { mConsumeRollupEvent = aConsumeMode; } // nsMenuPopupTimerMediator implementation. NS_IMPL_ISUPPORTS1(nsMenuPopupTimerMediator, nsITimerCallback) /** * Constructs a wrapper around an nsMenuFrame. * @param aFrame nsMenuFrame to create a wrapper around. */ nsMenuPopupTimerMediator::nsMenuPopupTimerMediator(nsMenuPopupFrame *aFrame) : mFrame(aFrame) { NS_ASSERTION(mFrame, "Must have frame"); } nsMenuPopupTimerMediator::~nsMenuPopupTimerMediator() { } /** * Delegates the notification to the contained frame if it has not been destroyed. * @param aTimer Timer which initiated the callback. * @return NS_ERROR_FAILURE if the frame has been destroyed. */ NS_IMETHODIMP nsMenuPopupTimerMediator::Notify(nsITimer* aTimer) { if (!mFrame) return NS_ERROR_FAILURE; return mFrame->Notify(aTimer); } /** * Clear the pointer to the contained nsMenuFrame. This should be called * when the contained nsMenuFrame is destroyed. */ void nsMenuPopupTimerMediator::ClearFrame() { mFrame = nsnull; }