gecko/b2g/components/MozKeyboard.js

127 lines
3.8 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 Ci = Components.interfaces;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/ObjectWrapper.jsm");
XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
"@mozilla.org/childprocessmessagemanager;1", "nsIMessageSender");
// -----------------------------------------------------------------------
// 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) {
let principal = win.document.nodePrincipal;
let perm = Services.perms
.testExactPermissionFromPrincipal(principal, "keyboard");
if (perm != Ci.nsIPermissionManager.ALLOW_ACTION) {
dump("No permission to use the keyboard API for " +
principal.origin + "\n");
return null;
}
Services.obs.addObserver(this, "inner-window-destroyed", false);
cpmm.addMessageListener('Keyboard:FocusChange', this);
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");
cpmm.removeMessageListener('Keyboard:FocusChange', 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) {
cpmm.sendAsyncMessage('Keyboard:SetSelectedOption', {
'index': index
});
},
setValue: function mozKeyboardSetValue(value) {
cpmm.sendAsyncMessage('Keyboard:SetValue', {
'value': value
});
},
setSelectedOptions: function mozKeyboardSetSelectedOptions(indexes) {
cpmm.sendAsyncMessage('Keyboard:SetSelectedOptions', {
'indexes': indexes
});
},
removeFocus: function mozKeyboardRemoveFocus() {
cpmm.sendAsyncMessage('Keyboard:RemoveFocus', {});
},
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) {
let wId = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
if (wId == this.innerWindowID)
this.uninit();
}
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([MozKeyboard]);