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Bug 708048 - Walk up tree to find a title for context menu items. r=kats

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This commit is contained in:
Wes Johnston 2012-12-20 12:11:31 -08:00
parent 27d329be7c
commit 79c005a680
1 changed files with 56 additions and 25 deletions
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81
mobile/android/chrome/content/browser.js
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@ -1487,17 +1487,37 @@ var NativeWindow = {
}
},
get _target() {
if (this._targetRef)
return this._targetRef.get();
return null;
},
set _target(aTarget) {
if (aTarget)
this._targetRef = Cu.getWeakReference(aTarget);
else this._targetRef = null;
},
_sendToContent: function(aX, aY) {
// initially we look for nearby clickable elements. If we don't find one we fall back to using whatever this click was on
let rootElement = ElementTouchHelper.elementFromPoint(aX, aY);
if (!rootElement)
rootElement = ElementTouchHelper.anyElementFromPoint(aX, aY)
// find and store the top most element this context menu is being shown for
// use the highlighted element if possible, otherwise look for nearby clickable elements
// If we still don't find one we fall back to using anything
let target = BrowserEventHandler._highlightElement || ElementTouchHelper.elementFromPoint(aX, aY);
if (!target)
target = ElementTouchHelper.anyElementFromPoint(aX, aY);
if (!target)
return;
// store a weakref to the target to be used when the context menu event returns
this._target = target;
this.menuitems = {};
let menuitemsSet = false;
let element = rootElement;
if (!element)
return;
// now walk up the tree and for each node look for any context menu items that apply
let element = target;
while (element) {
for each (let item in this.items) {
@ -1514,34 +1534,45 @@ var NativeWindow = {
// only send the contextmenu event to content if we are planning to show a context menu (i.e. not on every long tap)
if (menuitemsSet) {
let event = rootElement.ownerDocument.createEvent("MouseEvent");
let event = target.ownerDocument.createEvent("MouseEvent");
event.initMouseEvent("contextmenu", true, true, content,
0, aX, aY, aX, aY, false, false, false, false,
0, null);
rootElement.ownerDocument.defaultView.addEventListener("contextmenu", this, false);
rootElement.dispatchEvent(event);
} else if (SelectionHandler.canSelect(rootElement)) {
SelectionHandler.startSelection(rootElement, aX, aY);
target.ownerDocument.defaultView.addEventListener("contextmenu", this, false);
target.dispatchEvent(event);
} else {
this._target = null;
BrowserEventHandler._cancelTapHighlight();
if (SelectionHandler.canSelect(rootElement))
SelectionHandler.startSelection(rootElement, aX, aY);
}
},
_show: function(aEvent) {
if (aEvent.defaultPrevented)
let popupNode = this._target;
this._target = null;
if (aEvent.defaultPrevented || !popupNode) {
return;
}
Haptic.performSimpleAction(Haptic.LongPress);
let popupNode = aEvent.originalTarget;
let title = "";
if (popupNode.hasAttribute("title")) {
title = popupNode.getAttribute("title")
} else if ((popupNode instanceof Ci.nsIDOMHTMLAnchorElement && popupNode.href) ||
(popupNode instanceof Ci.nsIDOMHTMLAreaElement && popupNode.href)) {
title = this._getLinkURL(popupNode);
} else if (popupNode instanceof Ci.nsIImageLoadingContent && popupNode.currentURI) {
title = popupNode.currentURI.spec;
} else if (popupNode instanceof Ci.nsIDOMHTMLMediaElement) {
title = (popupNode.currentSrc || popupNode.src);
// spin through the tree looking for a title for this context menu
let node = popupNode;
let title ="";
while(node && !title) {
if (node.hasAttribute("title")) {
title = node.getAttribute("title")
} else if ((node instanceof Ci.nsIDOMHTMLAnchorElement && node.href) ||
(node instanceof Ci.nsIDOMHTMLAreaElement && node.href)) {
title = this._getLinkURL(node);
} else if (node instanceof Ci.nsIImageLoadingContent && node.currentURI) {
title = node.currentURI.spec;
} else if (node instanceof Ci.nsIDOMHTMLMediaElement) {
title = (node.currentSrc || node.src);
}
node = node.parentNode;
}
// convert this.menuitems object to an array for sending to native code
@ -1574,12 +1605,12 @@ var NativeWindow = {
},
handleEvent: function(aEvent) {
BrowserEventHandler._cancelTapHighlight();
aEvent.target.ownerDocument.defaultView.removeEventListener("contextmenu", this, false);
this._show(aEvent);
},
observe: function(aSubject, aTopic, aData) {
BrowserEventHandler._cancelTapHighlight();
let data = JSON.parse(aData);
// content gets first crack at cancelling context menus
this._sendToContent(data.x, data.y);