mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
268 lines
9.6 KiB
C++
268 lines
9.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** 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):
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
*
|
|
* 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 "nsSelectsAreaFrame.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIDOMHTMLOptionElement.h"
|
|
#include "nsIContent.h"
|
|
#include "nsListControlFrame.h"
|
|
#include "nsDisplayList.h"
|
|
|
|
nsIFrame*
|
|
NS_NewSelectsAreaFrame(nsIPresShell* aShell, nsStyleContext* aContext, PRUint32 aFlags)
|
|
{
|
|
nsSelectsAreaFrame* it = new (aShell) nsSelectsAreaFrame(aContext);
|
|
|
|
if (it) {
|
|
// We need NS_BLOCK_FLOAT_MGR to ensure that the options inside the select
|
|
// aren't expanded by right floats outside the select.
|
|
it->SetFlags(aFlags | NS_BLOCK_FLOAT_MGR);
|
|
}
|
|
|
|
return it;
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsSelectsAreaFrame)
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsSelectsAreaFrame::IsOptionElement(nsIContent* aContent)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optElem;
|
|
if (NS_SUCCEEDED(aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLOptionElement),(void**) getter_AddRefs(optElem)))) {
|
|
if (optElem != nsnull) {
|
|
result = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsSelectsAreaFrame::IsOptionElementFrame(nsIFrame *aFrame)
|
|
{
|
|
nsIContent *content = aFrame->GetContent();
|
|
if (content) {
|
|
return IsOptionElement(content);
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* This wrapper class lets us redirect mouse hits from the child frame of
|
|
* an option element to the element's own frame.
|
|
* REVIEW: This is what nsSelectsAreaFrame::GetFrameForPoint used to do
|
|
*/
|
|
class nsDisplayOptionEventGrabber : public nsDisplayWrapList {
|
|
public:
|
|
nsDisplayOptionEventGrabber(nsIFrame* aFrame, nsDisplayItem* aItem)
|
|
: nsDisplayWrapList(aFrame, aItem) {}
|
|
nsDisplayOptionEventGrabber(nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayWrapList(aFrame, aList) {}
|
|
virtual nsIFrame* HitTest(nsDisplayListBuilder* aBuilder, nsPoint aPt,
|
|
HitTestState* aState);
|
|
NS_DISPLAY_DECL_NAME("OptionEventGrabber")
|
|
|
|
virtual nsDisplayWrapList* WrapWithClone(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem);
|
|
};
|
|
|
|
nsIFrame* nsDisplayOptionEventGrabber::HitTest(nsDisplayListBuilder* aBuilder,
|
|
nsPoint aPt, HitTestState* aState)
|
|
{
|
|
nsIFrame* frame = mList.HitTest(aBuilder, aPt, aState);
|
|
|
|
if (frame) {
|
|
nsIFrame* selectedFrame = frame;
|
|
while (selectedFrame &&
|
|
!nsSelectsAreaFrame::IsOptionElementFrame(selectedFrame)) {
|
|
selectedFrame = selectedFrame->GetParent();
|
|
}
|
|
if (selectedFrame) {
|
|
return selectedFrame;
|
|
}
|
|
// else, keep the original result, which could be this frame
|
|
}
|
|
|
|
return frame;
|
|
}
|
|
|
|
nsDisplayWrapList* nsDisplayOptionEventGrabber::WrapWithClone(
|
|
nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem) {
|
|
return new (aBuilder) nsDisplayOptionEventGrabber(aItem->GetUnderlyingFrame(), aItem);
|
|
}
|
|
|
|
class nsOptionEventGrabberWrapper : public nsDisplayWrapper
|
|
{
|
|
public:
|
|
nsOptionEventGrabberWrapper() {}
|
|
virtual nsDisplayItem* WrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList) {
|
|
// We can't specify the underlying frame here. We need this list to be
|
|
// exploded if sorted.
|
|
return new (aBuilder) nsDisplayOptionEventGrabber(nsnull, aList);
|
|
}
|
|
virtual nsDisplayItem* WrapItem(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem) {
|
|
return new (aBuilder) nsDisplayOptionEventGrabber(aItem->GetUnderlyingFrame(), aItem);
|
|
}
|
|
};
|
|
|
|
static nsListControlFrame* GetEnclosingListFrame(nsIFrame* aSelectsAreaFrame)
|
|
{
|
|
nsIFrame* frame = aSelectsAreaFrame->GetParent();
|
|
while (frame) {
|
|
if (frame->GetType() == nsGkAtoms::listControlFrame)
|
|
return static_cast<nsListControlFrame*>(frame);
|
|
frame = frame->GetParent();
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
class nsDisplayListFocus : public nsDisplayItem {
|
|
public:
|
|
nsDisplayListFocus(nsSelectsAreaFrame* aFrame) : nsDisplayItem(aFrame) {
|
|
MOZ_COUNT_CTOR(nsDisplayListFocus);
|
|
}
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
virtual ~nsDisplayListFocus() {
|
|
MOZ_COUNT_DTOR(nsDisplayListFocus);
|
|
}
|
|
#endif
|
|
|
|
virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder) {
|
|
// override bounds because the list item focus ring may extend outside
|
|
// the nsSelectsAreaFrame
|
|
nsListControlFrame* listFrame = GetEnclosingListFrame(GetUnderlyingFrame());
|
|
return listFrame->GetOverflowRect() + aBuilder->ToReferenceFrame(listFrame);
|
|
}
|
|
virtual void Paint(nsDisplayListBuilder* aBuilder,
|
|
nsIRenderingContext* aCtx) {
|
|
nsListControlFrame* listFrame = GetEnclosingListFrame(GetUnderlyingFrame());
|
|
// listFrame must be non-null or we wouldn't get called.
|
|
listFrame->PaintFocus(*aCtx, aBuilder->ToReferenceFrame(listFrame));
|
|
}
|
|
NS_DISPLAY_DECL_NAME("ListFocus")
|
|
};
|
|
|
|
NS_IMETHODIMP
|
|
nsSelectsAreaFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
if (!aBuilder->IsForEventDelivery())
|
|
return BuildDisplayListInternal(aBuilder, aDirtyRect, aLists);
|
|
|
|
nsDisplayListCollection set;
|
|
nsresult rv = BuildDisplayListInternal(aBuilder, aDirtyRect, set);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsOptionEventGrabberWrapper wrapper;
|
|
return wrapper.WrapLists(aBuilder, this, set, aLists);
|
|
}
|
|
|
|
nsresult
|
|
nsSelectsAreaFrame::BuildDisplayListInternal(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsresult rv = nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsListControlFrame* listFrame = GetEnclosingListFrame(this);
|
|
if (listFrame && listFrame->IsFocused()) {
|
|
// we can't just associate the display item with the list frame,
|
|
// because then the list's scrollframe won't clip it (the scrollframe
|
|
// only clips contained descendants).
|
|
return aLists.Outlines()->AppendNewToTop(new (aBuilder)
|
|
nsDisplayListFocus(this));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSelectsAreaFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsListControlFrame* list = GetEnclosingListFrame(this);
|
|
NS_ASSERTION(list,
|
|
"Must have an nsListControlFrame! Frame constructor is "
|
|
"broken");
|
|
|
|
PRBool isInDropdownMode = list->IsInDropDownMode();
|
|
|
|
// See similar logic in nsListControlFrame::Reflow and
|
|
// nsListControlFrame::ReflowAsDropdown. We need to match it here.
|
|
nscoord oldHeight;
|
|
if (isInDropdownMode) {
|
|
// Store the height now in case it changes during
|
|
// nsBlockFrame::Reflow for some odd reason.
|
|
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
|
|
oldHeight = GetSize().height;
|
|
} else {
|
|
oldHeight = NS_UNCONSTRAINEDSIZE;
|
|
}
|
|
}
|
|
|
|
nsresult rv = nsBlockFrame::Reflow(aPresContext, aDesiredSize,
|
|
aReflowState, aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Check whether we need to suppress scrolbar updates. We want to do that if
|
|
// we're in a possible first pass and our height of a row has changed.
|
|
if (list->MightNeedSecondPass()) {
|
|
nscoord newHeightOfARow = list->CalcHeightOfARow();
|
|
// We'll need a second pass if our height of a row changed. For
|
|
// comboboxes, we'll also need it if our height changed. If we're going
|
|
// to do a second pass, suppress scrollbar updates for this pass.
|
|
if (newHeightOfARow != mHeightOfARow ||
|
|
(isInDropdownMode && (oldHeight != aDesiredSize.height ||
|
|
oldHeight != GetSize().height))) {
|
|
mHeightOfARow = newHeightOfARow;
|
|
list->SetSuppressScrollbarUpdate(PR_TRUE);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|