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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
function debug(msg) {
// dump("BrowserElementCopyPaste - " + msg + "\n");
}
debug("loaded");
var { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
var CopyPasteAssistent = {
COMMAND_MAP: {
'cut': 'cmd_cut',
'copy': 'cmd_copyAndCollapseToEnd',
'paste': 'cmd_paste',
'selectall': 'cmd_selectAll'
},
init: function() {
addEventListener("mozcaretstatechanged", this,
/* useCapture = */ true, /* wantsUntrusted = */ false);
addMessageListener("browser-element-api:call", this);
},
destroy: function() {
removeEventListener("mozcaretstatechanged", this,
/* useCapture = */ true, /* wantsUntrusted = */ false);
removeMessageListener("browser-element-api:call", this);
},
handleEvent: function(event) {
switch (event.type) {
case "mozcaretstatechanged":
this._caretStateChangedHandler(event);
break;
}
},
receiveMessage: function(message) {
switch (message.name) {
case "browser-element-api:call":
this._browserAPIHandler(message);
break;
}
},
_browserAPIHandler: function(e) {
switch (e.data.msg_name) {
case 'copypaste-do-command':
if (this._isCommandEnabled(e.data.command)) {
docShell.doCommand(this.COMMAND_MAP[e.data.command]);
}
break;
}
},
_isCommandEnabled: function(cmd) {
let command = this.COMMAND_MAP[cmd];
if (!command) {
return false;
}
return docShell.isCommandEnabled(command);
},
_caretStateChangedHandler: function(e) {
e.stopPropagation();
let boundingClientRect = e.boundingClientRect;
let canPaste = this._isCommandEnabled("paste");
let zoomFactor = content.innerWidth == 0 ? 1 : content.screen.width / content.innerWidth;
let detail = {
rect: {
width: boundingClientRect ? boundingClientRect.width : 0,
height: boundingClientRect ? boundingClientRect.height : 0,
top: boundingClientRect ? boundingClientRect.top : 0,
bottom: boundingClientRect ? boundingClientRect.bottom : 0,
left: boundingClientRect ? boundingClientRect.left : 0,
right: boundingClientRect ? boundingClientRect.right : 0,
},
commands: {
canSelectAll: this._isCommandEnabled("selectall"),
canCut: this._isCommandEnabled("cut"),
canCopy: this._isCommandEnabled("copy"),
canPaste: this._isCommandEnabled("paste"),
},
zoomFactor: zoomFactor,
reason: e.reason,
collapsed: e.collapsed,
caretVisible: e.caretVisible,
selectionVisible: e.selectionVisible,
selectionEditable: e.selectionEditable,
selectedTextContent: e.selectedTextContent
};
// Get correct geometry information if we have nested iframe.
let currentWindow = e.target.defaultView;
while (currentWindow.realFrameElement) {
let currentRect = currentWindow.realFrameElement.getBoundingClientRect();
detail.rect.top += currentRect.top;
detail.rect.bottom += currentRect.top;
detail.rect.left += currentRect.left;
detail.rect.right += currentRect.left;
currentWindow = currentWindow.realFrameElement.ownerDocument.defaultView;
let targetDocShell = currentWindow
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebNavigation);
if(targetDocShell.isMozBrowserOrApp) {
break;
}
}
sendAsyncMsg('caretstatechanged', detail);
},
};
CopyPasteAssistent.init();
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