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command_manager.js
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command_manager.js
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define(function(require, exports, module) {
"use strict";
var oop = require("../lib/oop");
var MultiHashHandler = require("../keyboard/hash_handler").MultiHashHandler;
var EventEmitter = require("../lib/event_emitter").EventEmitter;
/**
* @class CommandManager
*
**/
/**
* new CommandManager(platform, commands)
* @param {String} platform Identifier for the platform; must be either `"mac"` or `"win"`
* @param {Array} commands A list of commands
*
**/
var CommandManager = function(platform, commands) {
MultiHashHandler.call(this, commands, platform);
this.byName = this.commands;
this.setDefaultHandler("exec", function(e) {
if (!e.args) {
return e.command.exec(e.editor, {}, e.event, true);
}
return e.command.exec(e.editor, e.args, e.event, false);
});
};
oop.inherits(CommandManager, MultiHashHandler);
(function() {
oop.implement(this, EventEmitter);
this.exec = function(command, editor, args) {
if (Array.isArray(command)) {
for (var i = command.length; i--; ) {
if (this.exec(command[i], editor, args)) return true;
}
return false;
}
if (typeof command === "string")
command = this.commands[command];
if (!command)
return false;
if (editor && editor.$readOnly && !command.readOnly)
return false;
if (this.$checkCommandState != false && command.isAvailable && !command.isAvailable(editor))
return false;
var e = {editor: editor, command: command, args: args};
e.returnValue = this._emit("exec", e);
this._signal("afterExec", e);
return e.returnValue === false ? false : true;
};
this.toggleRecording = function(editor) {
if (this.$inReplay)
return;
editor && editor._emit("changeStatus");
if (this.recording) {
this.macro.pop();
this.off("exec", this.$addCommandToMacro);
if (!this.macro.length)
this.macro = this.oldMacro;
return this.recording = false;
}
if (!this.$addCommandToMacro) {
this.$addCommandToMacro = function(e) {
this.macro.push([e.command, e.args]);
}.bind(this);
}
this.oldMacro = this.macro;
this.macro = [];
this.on("exec", this.$addCommandToMacro);
return this.recording = true;
};
this.replay = function(editor) {
if (this.$inReplay || !this.macro)
return;
if (this.recording)
return this.toggleRecording(editor);
try {
this.$inReplay = true;
this.macro.forEach(function(x) {
if (typeof x == "string")
this.exec(x, editor);
else
this.exec(x[0], editor, x[1]);
}, this);
} finally {
this.$inReplay = false;
}
};
this.trimMacro = function(m) {
return m.map(function(x){
if (typeof x[0] != "string")
x[0] = x[0].name;
if (!x[1])
x = x[0];
return x;
});
};
}).call(CommandManager.prototype);
exports.CommandManager = CommandManager;
});