gecko-dev/toolkit/modules/RemoteController.js

96 строки
2.7 KiB
JavaScript

// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
// 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/.
function RemoteController(browser) {
this._browser = browser;
// A map of commands that have had their enabled/disabled state assigned. The
// value of each key will be true if enabled, and false if disabled.
this._supportedCommands = {};
}
RemoteController.prototype = {
QueryInterface: ChromeUtils.generateQI([
Ci.nsIController,
Ci.nsICommandController,
]),
isCommandEnabled(aCommand) {
return this._supportedCommands[aCommand] || false;
},
supportsCommand(aCommand) {
return aCommand in this._supportedCommands;
},
doCommand(aCommand) {
this._browser.messageManager.sendAsyncMessage(
"ControllerCommands:Do",
aCommand
);
},
getCommandStateWithParams(aCommand, aCommandParams) {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
},
doCommandWithParams(aCommand, aCommandParams) {
let cmd = {
cmd: aCommand,
params: null,
};
if (aCommand == "cmd_lookUpDictionary") {
// Although getBoundingClientRect of the element is logical pixel, but
// x and y parameter of cmd_lookUpDictionary are device pixel.
// So we need calculate child process's coordinate using correct unit.
let rect = this._browser.getBoundingClientRect();
let scale = this._browser.ownerGlobal.devicePixelRatio;
cmd.params = {
x: {
type: "long",
value: aCommandParams.getLongValue("x") - rect.left * scale,
},
y: {
type: "long",
value: aCommandParams.getLongValue("y") - rect.top * scale,
},
};
} else {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
}
this._browser.messageManager.sendAsyncMessage(
"ControllerCommands:DoWithParams",
cmd
);
},
getSupportedCommands() {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
},
onEvent() {},
// This is intended to be called from the browser binding to update
// the enabled and disabled commands.
enableDisableCommands(aAction, aEnabledCommands, aDisabledCommands) {
// Clear the list first
this._supportedCommands = {};
for (let command of aEnabledCommands) {
this._supportedCommands[command] = true;
}
for (let command of aDisabledCommands) {
this._supportedCommands[command] = false;
}
// Don't update anything if we're not the active element
if (this._browser != this._browser.ownerDocument.activeElement) {
return;
}
this._browser.ownerGlobal.updateCommands(aAction);
},
};