mirror of
https://github.com/mozilla/gecko-dev.git
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732 lines
20 KiB
JavaScript
732 lines
20 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/DOMRequestHelper.jsm");
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XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
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"@mozilla.org/childprocessmessagemanager;1", "nsISyncMessageSender");
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XPCOMUtils.defineLazyServiceGetter(this, "tm",
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"@mozilla.org/thread-manager;1", "nsIThreadManager");
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/*
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* A WeakMap to map input method iframe window to its active status and kbID.
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*/
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let WindowMap = {
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// WeakMap of <window, object> pairs.
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_map: null,
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/*
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* Check if the given window is active.
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*/
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isActive: function(win) {
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if (!this._map || !win) {
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return false;
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}
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let obj = this._map.get(win);
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if (obj && 'active' in obj) {
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return obj.active;
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}else{
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return false;
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}
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},
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/*
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* Set the active status of the given window.
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*/
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setActive: function(win, isActive) {
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if (!win) {
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return;
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}
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if (!this._map) {
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this._map = new WeakMap();
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}
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if (!this._map.has(win)) {
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this._map.set(win, {});
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}
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this._map.get(win).active = isActive;
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},
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/*
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* Get the keyboard ID (assigned by Keyboard.ksm) of the given window.
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*/
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getKbID: function(win) {
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if (!this._map || !win) {
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return null;
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}
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let obj = this._map.get(win);
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if (obj && 'kbID' in obj) {
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return obj.kbID;
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}else{
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return null;
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}
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},
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/*
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* Set the keyboard ID (assigned by Keyboard.ksm) of the given window.
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*/
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setKbID: function(win, kbID) {
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if (!win) {
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return;
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}
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if (!this._map) {
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this._map = new WeakMap();
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}
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if (!this._map.has(win)) {
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this._map.set(win, {});
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}
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this._map.get(win).kbID = kbID;
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}
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};
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let cpmmSendAsyncMessageWithKbID = function (self, msg, data) {
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data.kbID = WindowMap.getKbID(self._window);
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cpmm.sendAsyncMessage(msg, data);
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};
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/**
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* ==============================================
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* InputMethodManager
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* ==============================================
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*/
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function MozInputMethodManager(win) {
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this._window = win;
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}
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MozInputMethodManager.prototype = {
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_supportsSwitching: false,
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_window: null,
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classID: Components.ID("{7e9d7280-ef86-11e2-b778-0800200c9a66}"),
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QueryInterface: XPCOMUtils.generateQI([]),
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showAll: function() {
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if (!WindowMap.isActive(this._window)) {
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return;
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}
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cpmmSendAsyncMessageWithKbID(this, 'Keyboard:ShowInputMethodPicker', {});
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},
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next: function() {
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if (!WindowMap.isActive(this._window)) {
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return;
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}
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cpmmSendAsyncMessageWithKbID(this, 'Keyboard:SwitchToNextInputMethod', {});
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},
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supportsSwitching: function() {
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if (!WindowMap.isActive(this._window)) {
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return false;
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}
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return this._supportsSwitching;
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},
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hide: function() {
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if (!WindowMap.isActive(this._window)) {
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return;
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}
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cpmmSendAsyncMessageWithKbID(this, 'Keyboard:RemoveFocus', {});
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}
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};
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/**
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* ==============================================
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* InputMethod
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* ==============================================
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*/
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function MozInputMethod() { }
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MozInputMethod.prototype = {
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__proto__: DOMRequestIpcHelper.prototype,
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_inputcontext: null,
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_wrappedInputContext: null,
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_layouts: {},
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_window: null,
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_isSystem: false,
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_isKeyboard: true,
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classID: Components.ID("{4607330d-e7d2-40a4-9eb8-43967eae0142}"),
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIDOMGlobalPropertyInitializer,
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Ci.nsIObserver,
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Ci.nsISupportsWeakReference
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]),
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init: function mozInputMethodInit(win) {
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this._window = win;
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this._mgmt = new MozInputMethodManager(win);
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this.innerWindowID = win.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils)
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.currentInnerWindowID;
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Services.obs.addObserver(this, "inner-window-destroyed", false);
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let principal = win.document.nodePrincipal;
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let perm = Services.perms.testExactPermissionFromPrincipal(principal,
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"input-manage");
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if (perm === Ci.nsIPermissionManager.ALLOW_ACTION) {
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this._isSystem = true;
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}
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// Check if we can use keyboard related APIs.
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let testing = false;
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try {
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testing = Services.prefs.getBoolPref("dom.mozInputMethod.testing");
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} catch (e) {
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}
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perm = Services.perms.testExactPermissionFromPrincipal(principal, "input");
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if (!testing && perm !== Ci.nsIPermissionManager.ALLOW_ACTION) {
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this._isKeyboard = false;
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return;
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}
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cpmm.addWeakMessageListener('Keyboard:FocusChange', this);
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cpmm.addWeakMessageListener('Keyboard:SelectionChange', this);
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cpmm.addWeakMessageListener('Keyboard:GetContext:Result:OK', this);
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cpmm.addWeakMessageListener('Keyboard:LayoutsChange', this);
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cpmm.addWeakMessageListener('InputRegistry:Result:OK', this);
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cpmm.addWeakMessageListener('InputRegistry:Result:Error', this);
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},
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uninit: function mozInputMethodUninit() {
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this._window = null;
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this._mgmt = null;
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Services.obs.removeObserver(this, "inner-window-destroyed");
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if (!this._isKeyboard) {
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return;
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}
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cpmm.removeWeakMessageListener('Keyboard:FocusChange', this);
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cpmm.removeWeakMessageListener('Keyboard:SelectionChange', this);
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cpmm.removeWeakMessageListener('Keyboard:GetContext:Result:OK', this);
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cpmm.removeWeakMessageListener('Keyboard:LayoutsChange', this);
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cpmm.removeWeakMessageListener('InputRegistry:Result:OK', this);
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cpmm.removeWeakMessageListener('InputRegistry:Result:Error', this);
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this.setActive(false);
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},
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receiveMessage: function mozInputMethodReceiveMsg(msg) {
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if (!msg.name.startsWith('InputRegistry') &&
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!WindowMap.isActive(this._window)) {
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return;
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}
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let data = msg.data;
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let resolver = ('requestId' in data) ?
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this.takePromiseResolver(data.requestId) : null;
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switch(msg.name) {
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case 'Keyboard:FocusChange':
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if (data.type !== 'blur') {
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// XXX Bug 904339 could receive 'text' event twice
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this.setInputContext(data);
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}
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else {
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this.setInputContext(null);
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}
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break;
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case 'Keyboard:SelectionChange':
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if (this.inputcontext) {
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this._inputcontext.updateSelectionContext(data, false);
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}
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break;
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case 'Keyboard:GetContext:Result:OK':
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this.setInputContext(data);
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break;
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case 'Keyboard:LayoutsChange':
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this._layouts = data;
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break;
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case 'InputRegistry:Result:OK':
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resolver.resolve();
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break;
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case 'InputRegistry:Result:Error':
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resolver.reject(data.error);
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break;
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}
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},
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observe: function mozInputMethodObserve(subject, topic, data) {
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let wId = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
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if (wId == this.innerWindowID)
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this.uninit();
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},
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get mgmt() {
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return this._mgmt;
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},
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get inputcontext() {
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if (!WindowMap.isActive(this._window)) {
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return null;
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}
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return this._wrappedInputContext;
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},
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set oninputcontextchange(handler) {
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this.__DOM_IMPL__.setEventHandler("oninputcontextchange", handler);
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},
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get oninputcontextchange() {
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return this.__DOM_IMPL__.getEventHandler("oninputcontextchange");
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},
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setInputContext: function mozKeyboardContextChange(data) {
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if (this._inputcontext) {
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this._inputcontext.destroy();
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this._inputcontext = null;
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this._wrappedInputContext = null;
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this._mgmt._supportsSwitching = false;
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}
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if (data) {
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this._mgmt._supportsSwitching = this._layouts[data.type] ?
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this._layouts[data.type] > 1 :
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false;
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this._inputcontext = new MozInputContext(data);
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this._inputcontext.init(this._window);
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// inputcontext will be exposed as a WebIDL object. Create its
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// content-side object explicitly to avoid Bug 1001325.
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this._wrappedInputContext =
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this._window.MozInputContext._create(this._window, this._inputcontext);
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}
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let event = new this._window.Event("inputcontextchange",
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Cu.cloneInto({}, this._window));
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this.__DOM_IMPL__.dispatchEvent(event);
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},
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setActive: function mozInputMethodSetActive(isActive) {
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if (WindowMap.isActive(this._window) === isActive) {
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return;
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}
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WindowMap.setActive(this._window, isActive);
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if (isActive) {
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// Activate current input method.
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// If there is already an active context, then this will trigger
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// a GetContext:Result:OK event, and we can initialize ourselves.
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// Otherwise silently ignored.
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// get keyboard ID from Keyboard.jsm,
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// or if we already have it, get it from our map
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// Note: if we need to get it from Keyboard.jsm,
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// we have to use a synchronous message
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var kbID = WindowMap.getKbID(this._window);
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if (kbID !== null) {
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cpmmSendAsyncMessageWithKbID(this, 'Keyboard:Register', {});
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}else{
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let res = cpmm.sendSyncMessage('Keyboard:Register', {});
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WindowMap.setKbID(this._window, res[0]);
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}
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cpmmSendAsyncMessageWithKbID(this, 'Keyboard:GetContext', {});
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} else {
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// Deactive current input method.
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cpmmSendAsyncMessageWithKbID(this, 'Keyboard:Unregister', {});
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if (this._inputcontext) {
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this.setInputContext(null);
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}
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}
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},
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addInput: function(inputId, inputManifest) {
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return this._sendPromise(function(resolverId) {
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let appId = this._window.document.nodePrincipal.appId;
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cpmm.sendAsyncMessage('InputRegistry:Add', {
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requestId: resolverId,
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inputId: inputId,
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inputManifest: inputManifest,
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appId: appId
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});
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}.bind(this));
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},
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removeInput: function(inputId) {
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return this._sendPromise(function(resolverId) {
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let appId = this._window.document.nodePrincipal.appId;
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cpmm.sendAsyncMessage('InputRegistry:Remove', {
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requestId: resolverId,
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inputId: inputId,
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appId: appId
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});
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}.bind(this));
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},
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setValue: function(value) {
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this._ensureIsSystem();
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cpmm.sendAsyncMessage('System:SetValue', {
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'value': value
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});
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},
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setSelectedOption: function(index) {
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this._ensureIsSystem();
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cpmm.sendAsyncMessage('System:SetSelectedOption', {
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'index': index
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});
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},
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setSelectedOptions: function(indexes) {
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this._ensureIsSystem();
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cpmm.sendAsyncMessage('System:SetSelectedOptions', {
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'indexes': indexes
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});
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},
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removeFocus: function() {
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this._ensureIsSystem();
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cpmm.sendAsyncMessage('System:RemoveFocus', {});
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},
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_ensureIsSystem: function() {
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if (!this._isSystem) {
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throw new this._window.DOMError("Security",
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"Should have 'input-manage' permssion.");
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}
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},
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_sendPromise: function(callback) {
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let self = this;
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return this.createPromise(function(resolve, reject) {
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let resolverId = self.getPromiseResolverId({ resolve: resolve, reject: reject });
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callback(resolverId);
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});
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}
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};
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/**
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* ==============================================
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* InputContext
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* ==============================================
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*/
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function MozInputContext(ctx) {
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this._context = {
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inputtype: ctx.type,
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inputmode: ctx.inputmode,
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lang: ctx.lang,
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type: ["textarea", "contenteditable"].indexOf(ctx.type) > -1 ?
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ctx.type :
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"text",
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selectionStart: ctx.selectionStart,
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selectionEnd: ctx.selectionEnd,
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textBeforeCursor: ctx.textBeforeCursor,
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textAfterCursor: ctx.textAfterCursor
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};
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this._contextId = ctx.contextId;
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}
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MozInputContext.prototype = {
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__proto__: DOMRequestIpcHelper.prototype,
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_window: null,
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_context: null,
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_contextId: -1,
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classID: Components.ID("{1e38633d-d08b-4867-9944-afa5c648adb6}"),
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIObserver,
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Ci.nsISupportsWeakReference
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]),
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init: function ic_init(win) {
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this._window = win;
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this._utils = win.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils);
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this.initDOMRequestHelper(win,
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["Keyboard:GetText:Result:OK",
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"Keyboard:GetText:Result:Error",
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"Keyboard:SetSelectionRange:Result:OK",
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"Keyboard:ReplaceSurroundingText:Result:OK",
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"Keyboard:SendKey:Result:OK",
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"Keyboard:SendKey:Result:Error",
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"Keyboard:SetComposition:Result:OK",
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"Keyboard:EndComposition:Result:OK",
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"Keyboard:SequenceError"]);
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},
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destroy: function ic_destroy() {
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let self = this;
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// All requests that are still pending need to be invalidated
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// because the context is no longer valid.
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this.forEachPromiseResolver(function(k) {
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self.takePromiseResolver(k).reject("InputContext got destroyed");
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});
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this.destroyDOMRequestHelper();
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// A consuming application might still hold a cached version of
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// this object. After destroying all methods will throw because we
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// cannot create new promises anymore, but we still hold
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// (outdated) information in the context. So let's clear that out.
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for (var k in this._context) {
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if (this._context.hasOwnProperty(k)) {
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this._context[k] = null;
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}
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}
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this._window = null;
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},
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receiveMessage: function ic_receiveMessage(msg) {
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if (!msg || !msg.json) {
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dump('InputContext received message without data\n');
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return;
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}
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let json = msg.json;
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let resolver = this.takePromiseResolver(json.requestId);
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if (!resolver) {
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return;
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}
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// Update context first before resolving promise to avoid race condition
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if (json.selectioninfo) {
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this.updateSelectionContext(json.selectioninfo, true);
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}
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switch (msg.name) {
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case "Keyboard:SendKey:Result:OK":
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resolver.resolve();
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break;
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case "Keyboard:SendKey:Result:Error":
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resolver.reject(json.error);
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break;
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case "Keyboard:GetText:Result:OK":
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resolver.resolve(json.text);
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break;
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case "Keyboard:GetText:Result:Error":
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resolver.reject(json.error);
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break;
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case "Keyboard:SetSelectionRange:Result:OK":
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case "Keyboard:ReplaceSurroundingText:Result:OK":
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resolver.resolve(
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Cu.cloneInto(json.selectioninfo, this._window));
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break;
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case "Keyboard:SequenceError":
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// Occurs when a new element got focus, but the inputContext was
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// not invalidated yet...
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resolver.reject("InputContext has expired");
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break;
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case "Keyboard:SetComposition:Result:OK": // Fall through.
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case "Keyboard:EndComposition:Result:OK":
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resolver.resolve();
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break;
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default:
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dump("Could not find a handler for " + msg.name);
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resolver.reject();
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break;
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}
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},
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updateSelectionContext: function ic_updateSelectionContext(ctx, ownAction) {
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if (!this._context) {
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return;
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}
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let selectionDirty = this._context.selectionStart !== ctx.selectionStart ||
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this._context.selectionEnd !== ctx.selectionEnd;
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let surroundDirty = this._context.textBeforeCursor !== ctx.textBeforeCursor ||
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this._context.textAfterCursor !== ctx.textAfterCursor;
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this._context.selectionStart = ctx.selectionStart;
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|
this._context.selectionEnd = ctx.selectionEnd;
|
|
this._context.textBeforeCursor = ctx.textBeforeCursor;
|
|
this._context.textAfterCursor = ctx.textAfterCursor;
|
|
|
|
if (selectionDirty) {
|
|
this._fireEvent("selectionchange", {
|
|
selectionStart: ctx.selectionStart,
|
|
selectionEnd: ctx.selectionEnd,
|
|
ownAction: ownAction
|
|
});
|
|
}
|
|
|
|
if (surroundDirty) {
|
|
this._fireEvent("surroundingtextchange", {
|
|
beforeString: ctx.textBeforeCursor,
|
|
afterString: ctx.textAfterCursor,
|
|
ownAction: ownAction
|
|
});
|
|
}
|
|
},
|
|
|
|
_fireEvent: function ic_fireEvent(eventName, aDetail) {
|
|
let detail = {
|
|
detail: aDetail
|
|
};
|
|
|
|
let event = new this._window.CustomEvent(eventName,
|
|
Cu.cloneInto(detail, this._window));
|
|
this.__DOM_IMPL__.dispatchEvent(event);
|
|
},
|
|
|
|
// tag name of the input field
|
|
get type() {
|
|
return this._context.type;
|
|
},
|
|
|
|
// type of the input field
|
|
get inputType() {
|
|
return this._context.inputtype;
|
|
},
|
|
|
|
get inputMode() {
|
|
return this._context.inputmode;
|
|
},
|
|
|
|
get lang() {
|
|
return this._context.lang;
|
|
},
|
|
|
|
getText: function ic_getText(offset, length) {
|
|
let self = this;
|
|
return this._sendPromise(function(resolverId) {
|
|
cpmmSendAsyncMessageWithKbID(self, 'Keyboard:GetText', {
|
|
contextId: self._contextId,
|
|
requestId: resolverId,
|
|
offset: offset,
|
|
length: length
|
|
});
|
|
});
|
|
},
|
|
|
|
get selectionStart() {
|
|
return this._context.selectionStart;
|
|
},
|
|
|
|
get selectionEnd() {
|
|
return this._context.selectionEnd;
|
|
},
|
|
|
|
get textBeforeCursor() {
|
|
return this._context.textBeforeCursor;
|
|
},
|
|
|
|
get textAfterCursor() {
|
|
return this._context.textAfterCursor;
|
|
},
|
|
|
|
setSelectionRange: function ic_setSelectionRange(start, length) {
|
|
let self = this;
|
|
return this._sendPromise(function(resolverId) {
|
|
cpmmSendAsyncMessageWithKbID(self, 'Keyboard:SetSelectionRange', {
|
|
contextId: self._contextId,
|
|
requestId: resolverId,
|
|
selectionStart: start,
|
|
selectionEnd: start + length
|
|
});
|
|
});
|
|
},
|
|
|
|
get onsurroundingtextchange() {
|
|
return this.__DOM_IMPL__.getEventHandler("onsurroundingtextchange");
|
|
},
|
|
|
|
set onsurroundingtextchange(handler) {
|
|
this.__DOM_IMPL__.setEventHandler("onsurroundingtextchange", handler);
|
|
},
|
|
|
|
get onselectionchange() {
|
|
return this.__DOM_IMPL__.getEventHandler("onselectionchange");
|
|
},
|
|
|
|
set onselectionchange(handler) {
|
|
this.__DOM_IMPL__.setEventHandler("onselectionchange", handler);
|
|
},
|
|
|
|
replaceSurroundingText: function ic_replaceSurrText(text, offset, length) {
|
|
let self = this;
|
|
return this._sendPromise(function(resolverId) {
|
|
cpmmSendAsyncMessageWithKbID(self, 'Keyboard:ReplaceSurroundingText', {
|
|
contextId: self._contextId,
|
|
requestId: resolverId,
|
|
text: text,
|
|
offset: offset || 0,
|
|
length: length || 0
|
|
});
|
|
});
|
|
},
|
|
|
|
deleteSurroundingText: function ic_deleteSurrText(offset, length) {
|
|
return this.replaceSurroundingText(null, offset, length);
|
|
},
|
|
|
|
sendKey: function ic_sendKey(keyCode, charCode, modifiers, repeat) {
|
|
let self = this;
|
|
return this._sendPromise(function(resolverId) {
|
|
cpmmSendAsyncMessageWithKbID(self, 'Keyboard:SendKey', {
|
|
contextId: self._contextId,
|
|
requestId: resolverId,
|
|
keyCode: keyCode,
|
|
charCode: charCode,
|
|
modifiers: modifiers,
|
|
repeat: repeat
|
|
});
|
|
});
|
|
},
|
|
|
|
setComposition: function ic_setComposition(text, cursor, clauses) {
|
|
let self = this;
|
|
return this._sendPromise(function(resolverId) {
|
|
cpmmSendAsyncMessageWithKbID(self, 'Keyboard:SetComposition', {
|
|
contextId: self._contextId,
|
|
requestId: resolverId,
|
|
text: text,
|
|
cursor: (typeof cursor !== 'undefined') ? cursor : text.length,
|
|
clauses: clauses || null
|
|
});
|
|
});
|
|
},
|
|
|
|
endComposition: function ic_endComposition(text) {
|
|
let self = this;
|
|
return this._sendPromise(function(resolverId) {
|
|
cpmmSendAsyncMessageWithKbID(self, 'Keyboard:EndComposition', {
|
|
contextId: self._contextId,
|
|
requestId: resolverId,
|
|
text: text || ''
|
|
});
|
|
});
|
|
},
|
|
|
|
_sendPromise: function(callback) {
|
|
let self = this;
|
|
return this.createPromise(function(resolve, reject) {
|
|
let resolverId = self.getPromiseResolverId({ resolve: resolve, reject: reject });
|
|
if (!WindowMap.isActive(self._window)) {
|
|
self.removePromiseResolver(resolverId);
|
|
reject('Input method is not active.');
|
|
return;
|
|
}
|
|
callback(resolverId);
|
|
});
|
|
}
|
|
};
|
|
|
|
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([MozInputMethod]);
|