gecko-dev/b2g/components/MozKeyboard.js

135 lines
4.1 KiB
JavaScript

/* 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";
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const kFormsFrameScript = "chrome://browser/content/forms.js";
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/ObjectWrapper.jsm");
// -----------------------------------------------------------------------
// MozKeyboard
// -----------------------------------------------------------------------
function MozKeyboard() { }
MozKeyboard.prototype = {
classID: Components.ID("{397a7fdf-2254-47be-b74e-76625a1a66d5}"),
QueryInterface: XPCOMUtils.generateQI([
Ci.nsIB2GKeyboard, Ci.nsIDOMGlobalPropertyInitializer, Ci.nsIObserver
]),
classInfo: XPCOMUtils.generateCI({
"classID": Components.ID("{397a7fdf-2254-47be-b74e-76625a1a66d5}"),
"contractID": "@mozilla.org/b2g-keyboard;1",
"interfaces": [Ci.nsIB2GKeyboard],
"flags": Ci.nsIClassInfo.DOM_OBJECT,
"classDescription": "B2G Virtual Keyboard"
}),
init: function mozKeyboardInit(win) {
Services.obs.addObserver(this, "inner-window-destroyed", false);
Services.obs.addObserver(this, 'in-process-browser-frame-shown', false);
Services.obs.addObserver(this, 'remote-browser-frame-shown', false);
this._window = win;
this._utils = win.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils);
this.innerWindowID = this._utils.currentInnerWindowID;
this._focusHandler = null;
},
uninit: function mozKeyboardUninit() {
Services.obs.removeObserver(this, "inner-window-destroyed");
if (this._messageManager) {
this._messageManager.removeMessageListener("Forms:Input", this);
}
this._window = null;
this._utils = null;
this._focusHandler = null;
},
sendKey: function mozKeyboardSendKey(keyCode, charCode) {
charCode = (charCode == undefined) ? keyCode : charCode;
["keydown", "keypress", "keyup"].forEach((function sendKey(type) {
this._utils.sendKeyEvent(type, keyCode, charCode, null);
}).bind(this));
},
setSelectedOption: function mozKeyboardSetSelectedOption(index) {
this._messageManager.broadcastAsyncMessage("Forms:Select:Choice", {
"index": index
});
},
setValue: function mozKeyboardSetValue(value) {
this._messageManager.broadcastAsyncMessage("Forms:Input:Value", {
"value": value
});
},
setSelectedOptions: function mozKeyboardSetSelectedOptions(indexes) {
this._messageManager.broadcastAsyncMessage("Forms:Select:Choice", {
"indexes": indexes || []
});
},
set onfocuschange(val) {
this._focusHandler = val;
},
get onfocuschange() {
return this._focusHandler;
},
receiveMessage: function mozKeyboardReceiveMessage(msg) {
let handler = this._focusHandler;
if (!handler || !(handler instanceof Ci.nsIDOMEventListener))
return;
let detail = {
"detail": msg.json
};
let evt = new this._window.CustomEvent("focuschanged",
ObjectWrapper.wrap(detail, this._window));
handler.handleEvent(evt);
},
observe: function mozKeyboardObserve(subject, topic, data) {
switch (topic) {
case "inner-window-destroyed": {
let wId = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
if (wId == this.innerWindowID) {
this.uninit();
}
break;
}
case 'remote-browser-frame-shown':
case 'in-process-browser-frame-shown': {
let frameLoader = subject.QueryInterface(Ci.nsIFrameLoader);
let mm = frameLoader.messageManager;
this._messageManager = mm;
mm.addMessageListener("Forms:Input", this);
try {
mm.loadFrameScript(kFormsFrameScript, true);
} catch (e) {
dump('Error loading ' + kFormsFrameScript + ' as frame script: ' + e + '\n');
}
break;
}
}
}
};
const NSGetFactory = XPCOMUtils.generateNSGetFactory([MozKeyboard]);