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bug 667243 - use caretPositionFromPoint for controlling text selection r=mfinkle

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This commit is contained in:
Brad Lassey 2011-08-18 16:54:34 -04:00
parent 156110781c
commit 44e0ff8cb4
1 changed files with 60 additions and 50 deletions
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110
mobile/chrome/content/content.js
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@ -1353,6 +1353,27 @@ var SelectionHandler = {
addMessageListener("Browser:SelectionMove", this);
},
getCurrentWindowAndOffset: function(x, y, offset) {
let utils = Util.getWindowUtils(content);
let elem = utils.elementFromPoint(x, y, true, false);
while (elem && (elem instanceof HTMLIFrameElement || elem instanceof HTMLFrameElement)) {
// adjust client coordinates' origin to be top left of iframe viewport
let rect = elem.getBoundingClientRect();
scrollOffset = ContentScroll.getScrollOffset(elem.ownerDocument.defaultView);
offset.x += rect.left;
x -= rect.left;
offset.y += rect.top + scrollOffset.y;
y -= rect.top + scrollOffset.y;
utils = elem.contentDocument.defaultView.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
elem = utils.elementFromPoint(x, y, true, false);
}
if (!elem)
return;
return { contentWindow: elem.ownerDocument.defaultView, offset: offset };
},
receiveMessage: function sh_receiveMessage(aMessage) {
let scrollOffset = ContentScroll.getScrollOffset(content);
let utils = Util.getWindowUtils(content);
@ -1366,24 +1387,7 @@ var SelectionHandler = {
// if this is an iframe, dig down to find the document that was clicked
let x = json.x - scrollOffset.x;
let y = json.y - scrollOffset.y;
let offset = scrollOffset;
let elem = utils.elementFromPoint(x, y, true, false);
while (elem && (elem instanceof HTMLIFrameElement || elem instanceof HTMLFrameElement)) {
// adjust client coordinates' origin to be top left of iframe viewport
let rect = elem.getBoundingClientRect();
scrollOffset = ContentScroll.getScrollOffset(elem.ownerDocument.defaultView);
offset.x += rect.left;
x -= rect.left;
offset.y += rect.top + scrollOffset.y;
y -= rect.top + scrollOffset.y;
utils = elem.contentDocument.defaultView.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
elem = utils.elementFromPoint(x, y, true, false);
}
if (!elem)
return;
let contentWindow = elem.ownerDocument.defaultView;
let { contentWindow: contentWindow, offset: offset } = this.getCurrentWindowAndOffset(x, y, scrollOffset);
let currentDocShell = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation).QueryInterface(Ci.nsIDocShell);
// Remove any previous selected or created ranges. Tapping anywhere on a
@ -1391,13 +1395,13 @@ var SelectionHandler = {
let selection = contentWindow.getSelection();
selection.removeAllRanges();
// Position the caret using a fake mouse click
utils.sendMouseEventToWindow("mousedown", x, y, 0, 1, 0, true);
utils.sendMouseEventToWindow("mouseup", x, y, 0, 1, 0, true);
// Select the word nearest the caret
try {
let caretPos = contentWindow.document.caretPositionFromPoint(json.x - scrollOffset.x, json.y - scrollOffset.y);
let selcon = currentDocShell.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsISelectionDisplay).QueryInterface(Ci.nsISelectionController);
let sel = selcon.getSelection(1);
sel.collapse(caretPos.offsetNode, caretPos.offset);
// Select the word nearest the caret
selcon.wordMove(false, false);
selcon.wordMove(true, true);
} catch(e) {
@ -1438,7 +1442,9 @@ var SelectionHandler = {
if (this.contentWindow)
this.contentWindow.getSelection().removeAllRanges();
this.contentWindow = null;
} catch(e) {}
} catch(e) {
Cu.reportError(e);
}
if (pointInSelection && this.selectedText.length) {
let clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
@ -1454,33 +1460,37 @@ var SelectionHandler = {
if (!this.contentWindow)
return;
// Hack to avoid setting focus in a textbox [Bugs 654352 & 667243]
let elemUnder = elementFromPoint(json.x - scrollOffset.x, json.y - scrollOffset.y);
if (elemUnder && elemUnder instanceof Ci.nsIDOMHTMLInputElement || elemUnder instanceof Ci.nsIDOMHTMLTextAreaElement)
let x = json.x - scrollOffset.x;
let y = json.y - scrollOffset.y;
try {
let caretPos = this.contentWindow.document.caretPositionFromPoint(x, y);
if (caretPos.offsetNode == null ||
caretPos.offsetNode instanceof Ci.nsIDOMHTMLInputElement ||
caretPos.offsetNode instanceof Ci.nsIDOMHTMLTextAreaElement ||
caretPos.offsetNode.ownerDocument.defaultView != this.contentWindow)
return;
// Keep the cache in "client" coordinates
if (json.type == "end")
this.cache.end = { x: json.x, y: json.y };
else
this.cache.start = { x: json.x, y: json.y };
let currentDocShell = this.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation).QueryInterface(Ci.nsIDocShell);
let selcon = currentDocShell.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsISelectionDisplay).QueryInterface(Ci.nsISelectionController);
let sel = selcon.getSelection(1);
if (json.type != "end") {
let focusOffset = sel.focusOffset;
let focusNode = sel.focusNode;
sel.collapse(caretPos.offsetNode, caretPos.offset);
sel.extend(focusNode, focusOffset);
} else {
sel.extend(caretPos.offsetNode, caretPos.offset);
}
} catch(e) {
Cu.reportError(e);
return;
// Limit the selection to the initial content window (don't leave or enter iframes)
if (elemUnder && elemUnder.ownerDocument.defaultView != this.contentWindow)
return;
// Use fake mouse events to update the selection
if (json.type == "end") {
// Keep the cache in "client" coordinates, but translate for the mouse event
this.cache.end = { x: json.x, y: json.y };
let end = { x: this.cache.end.x - scrollOffset.x, y: this.cache.end.y - scrollOffset.y };
utils.sendMouseEventToWindow("mousedown", end.x, end.y, 0, 1, Ci.nsIDOMNSEvent.SHIFT_MASK, true);
utils.sendMouseEventToWindow("mouseup", end.x, end.y, 0, 1, Ci.nsIDOMNSEvent.SHIFT_MASK, true);
} else {
// Keep the cache in "client" coordinates, but translate for the mouse event
this.cache.start = { x: json.x, y: json.y };
let start = { x: this.cache.start.x - scrollOffset.x, y: this.cache.start.y - scrollOffset.y };
let end = { x: this.cache.end.x - scrollOffset.x, y: this.cache.end.y - scrollOffset.y };
utils.sendMouseEventToWindow("mousedown", start.x, start.y, 0, 0, 0, true);
utils.sendMouseEventToWindow("mouseup", start.x, start.y, 0, 0, 0, true);
utils.sendMouseEventToWindow("mousedown", end.x, end.y, 0, 1, Ci.nsIDOMNSEvent.SHIFT_MASK, true);
utils.sendMouseEventToWindow("mouseup", end.x, end.y, 0, 1, Ci.nsIDOMNSEvent.SHIFT_MASK, true);
}
// Cache the selected text since the selection might be gone by the time we get the "end" message