radio/libjs/wController/player.js

174 lines
5.7 KiB
JavaScript

"use strict";
var Uint64 = require("../wType/uint64");
var Address = require("../wType/address");
var Controller = require("./controller");
var Button = require("./button");
var ImageById = require("./imageById");
var Vocabulary = require("./vocabulary");
var Enum = require("../utils/enum");
var Player = Controller.inherit({
className: "Player",
constructor: function(addr) {
Controller.fn.constructor.call(this, addr);
this.controls = Object.create(null);
this.views = Object.create(null);
this.mode = PlayerMode.straight.playback;
this.addHandler("get");
this.addHandler("viewsChange");
},
_addControl: function(type, address) {
var t = type.valueOf();
if (this.controls[t] !== undefined) {
throw new Error("An attempt to add multiple instances of " + ItemType.reversed[t] + " into Player");
}
if (ItemType.reversed[t] !== undefined) {
switch (t) {
case ItemType.straight.playPause:
var btn = new Button(address.clone());
btn.itemType = t;
this.controls[t] = btn;
this.addController(btn);
this.trigger("newElement", btn, t);
break;
default:
this.trigger("serviceMessage", "An attempt to add ItemType " + ItemType.reversed[t] + " to controls of the Player, but it's not qualified to be a control");
}
} else {
this.trigger("serviceMessage", "An unrecgnized item ItemType in Player: " + t);
}
},
_addView: function(type, address) {
var t = type.valueOf();
var ctrl;
var supported = false;
if (this.views[t] !== undefined) {
throw new Error("An attempt to add multiple instances of " + ItemType.reversed[t] + " into Player");
}
if (ItemType.reversed[t] !== undefined) {
switch (t) {
case ItemType.straight.queue:
this.trigger("serviceMessage", "Queue is not supported yet in Player");
break;
case ItemType.straight.currentPlayback:
ctrl = new Vocabulary(address.clone());
ctrl.on("newElement", this._onNewPlayBackElement, this);
ctrl.on("removeElement", this._onNewRemoveBackElement, this);
supported = true;
break;
case ItemType.straight.picture:
ctrl = new ImageById(null, address.back());
ctrl.ItemType = t;
this.views[t] = ctrl;
this.trigger("newElement", ctrl, t);
supported = false; //just to avoid adding with addController, since ImageById is not a controller
break;
default:
this.trigger("serviceMessage", "An attempt to add ItemType " + ItemType.reversed[t] + " to views of the Player, but it's not qualified to be a view");
}
} else {
this.trigger("serviceMessage", "An unrecgnized item ItemType in Player: " + t);
}
if (supported) {
ctrl.ItemType = t;
this.views[t] = ctrl;
this.addController(ctrl);
this.trigger("newElement", ctrl, t);
}
},
_h_get: function(ev) {
var data = ev.getData();
var controls = data.at("controls");
var views = data.at("views");
var mode = data.at("mode").valueOf();
var size, i, vc;
size = controls.length();
for (i = 0; i < size; ++i) {
vc = controls.at(i);
this._addControl(vc.at("type"), vc.at("address"));
}
size = views.length();
for (i = 0; i < size; ++i) {
vc = views.at(i);
this._addView(vc.at("type"), vc.at("address"));
}
if (this.mode !== mode) {
if (PlayerMode.reversed[mode] === undefined) {
throw new Error("Unsupported mode of player: " + mode);
}
this.mode = mode;
}
this.initialized = true;
this.trigger("data");
},
_h_viewsChange: function(ev) {
var data = ev.getData();
var add = data.at("add");
var remove = data.at("remove");
var size, i, vc;
size = remove.length();
for (i = 0; i < size; ++i) {
this._removeView(remove.at(i));
}
size = add.length();
for (i = 0; i < size; ++i) {
vc = add.at(i);
this._addView(vc.at("type"), vc.at("address"));
}
},
_onNewPlayBackElement: function(key, element) {
switch (key) {
case "image":
var address = new Address(["images", element.toString()]);
this._addView(new Uint64(ItemType.straight.picture), address);
address.destructor();
break;
}
},
_onNewRemoveBackElement: function(key) {
switch (key) {
case "image":
this._removeView(new Uint64(ItemType.straight.picture));
break;
}
},
_removeControl: function(type) {
//TODO
},
_removeView: function(type) {
//TODO
}
});
var ItemType = new Enum("ItemType");
ItemType.add("playPause");
ItemType.add("currentPlayback");
ItemType.add("queue");
ItemType.add("picture");
var PlayerMode = new Enum("PlayerMode");
PlayerMode.add("playback");
Player.ItemType = ItemType;
module.exports = Player;