/*
 *   Copyright © Jordan Lee
 *   This code is licensed under the GPL version 2.
 *   <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
 */

function FileRow(torrent, i)
{
	this.initialize(torrent, i);
}

FileRow.prototype =
{
	initialize: function(torrent, i)
	{
		this._torrent = torrent;
		this._index = i;
		this.createRow(torrent, i);
	},

	getTorrent: function()
	{
		return this._torrent;
	},
	getIndex: function()
	{
		return this._index;
	},

	readAttributes: function(file)
	{
		if (file.index !== undefined && file.index !== this._index) {
			this._index = file.index;
			this._dirty = true;
		}
		if (file.bytesCompleted !== undefined && file.bytesCompleted !== this._done) {
			this._done   = file.bytesCompleted;
			this._dirty = true;
		}
		if (file.length !== undefined && file.length !== this._size) {
			this._size   = file.length;
			this._dirty = true;
		}
		if (file.priority !== undefined && file.priority !== this._prio) {
			this._prio   = file.priority;
			this._dirty = true;
		}
		if (file.wanted !== undefined && file.wanted !== this._wanted) {
			this._wanted = file.wanted;
			this._dirty = true;
		}
	},

	refreshWantedHTML: function()
	{
		var e = this.getElement(),
		    c = [ e.classNameConst ];

		if (!this._wanted) { c.push('skip'); }
		if (this.isDone()) { c.push('complete'); }
		e.className = c.join(' ');
	},
	refreshPriorityHTML: function()
	{
		var e = this._priority_control,
		    c = [ e.classNameConst ];

		switch(this._prio) {
			case -1 : c.push('low'); break;
			case 1  : c.push('high'); break;
			default : c.push('normal'); break;
		}
		e.className = c.join(' ');
	},
	refreshProgressHTML: function()
	{
		var pct = 100 * (this._size ? (this._done / this._size) : 1.0),
		    c = [ Transmission.fmt.size(this._done),
			  ' of ',
			  Transmission.fmt.size(this._size),
			  ' (',
			  Transmission.fmt.percentString(pct),
			  '%)' ].join('');
		setInnerHTML(this._progress[0], c);
	},
	refreshHTML: function() {
		if (this._dirty) {
			this._dirty = false;
			this.refreshProgressHTML();
			this.refreshWantedHTML();
			this.refreshPriorityHTML();
		}
	},
	refresh: function()
	{
		var i = this.getIndex(),
		    t = this.getTorrent();
		this.readAttributes(t.getFile(i));
		this.refreshHTML();
	},

	isDone: function () {
		return this._done >= this._size;
	},
	isEditable: function () {
		return (this.getTorrent().getFileCount()>1) && !this.isDone();
	},

	createRow: function(torrent, i)
	{
		var me = this,
		    file = torrent.getFile(i),
		    name, root, wanted_div, pri_div, file_div, prog_div;

		root = document.createElement('li');
		root.id = 't' + this._torrent.getId() + 'f' + this._index;
		root.classNameConst = 'inspector_torrent_file_list_entry ' + ((i%2)?'odd':'even');
		root.className = root.classNameConst;

		wanted_div = document.createElement('div');
		wanted_div.className = "file_wanted_control";
		$(wanted_div).bind('click',function(){ me.fireWantedChanged(!me._wanted); });

		pri_div = document.createElement('div');
		pri_div.classNameConst = "file_priority_control";
		pri_div.className = pri_div.classNameConst;
		$(pri_div).bind('click',function(ev){
			var prio,
			    x = ev.pageX,
			    e = ev.target;
			while (e) {
				x -= e.offsetLeft;
				e = e.offsetParent;
			}
			if (isMobileDevice) {
				if (x < 8) prio = -1;
				else if (x < 27) prio = 0;
				else prio = 1;
			} else {
				if (x < 12) prio = -1;
				else if (x < 23) prio = 0;
				else prio = 1;
			}
			me.firePriorityChanged(prio);
		});

		name = file.name || 'Unknown';
		name = name.substring(name.lastIndexOf('/')+1);
		name = name.replace(/([\/_\.])/g, "$1&#8203;");
		file_div = document.createElement('div');
		file_div.className = "inspector_torrent_file_list_entry_name";
		file_div.innerHTML = name;

		prog_div = document.createElement('div');
		prog_div.className = "inspector_torrent_file_list_entry_progress";

		root.appendChild(wanted_div);
		root.appendChild(pri_div);
		root.appendChild(file_div);
		root.appendChild(prog_div);

		this._element = root;
		this._priority_control = pri_div;
		this._progress = $(prog_div);

		this.refresh();
		return root;
	},

	getElement: function()
	{
		return this._element;
	},

	fireWantedChanged: function(do_want)
	{
		$(this).trigger('wantedToggled',[ this, do_want ]);
	},
	firePriorityChanged: function(priority)
	{
		$(this).trigger('priorityToggled',[ this, priority ]);
	}
};