web_frontend/file.js

   1 //
   2 // Armadillo File Manager
   3 // Copyright (c) 2010, Robert Sesek <http://www.bluestatic.org>
   4 //
   5 // This program is free software: you can redistribute it and/or modify it under
   6 // the terms of the GNU General Public License as published by the Free Software
   7 // Foundation, either version 3 of the License, or any later version.
   8 //
   9
  10 goog.provide('armadillo.File');
  11
  12 goog.require('goog.Disposable');
  13 goog.require('goog.dom');
  14
  15 /**
  16  * A file in a directory listing.
  17  * @param  {string}  File name.
  18  * @constructor
  19  */
  20 armadillo.File = function(name) {
  21   goog.Disposable.call(this);
  22   this.name_ = name;
  23   this.isDirectory_ = app.isDirectory(name);
  24 };
  25 goog.inherits(armadillo.File, goog.Disposable);
  26
  27 /**
  28  * Disposer
  29  * @protected
  30  */
  31 goog.Disposable.prototype.disposeInternal = function() {
  32   armadillo.File.superClass_.disposeInternal.call(this);
  33   this.element_ = null;
  34   goog.events.unlistenByKey(this.clickListener_);
  35   goog.events.unlistenByKey(this.mouseOverListener_);
  36   goog.events.unlistenByKey(this.mouseOutListener_);
  37   this.button_ = null;
  38   goog.events.unlistenByKey(this.buttonListener_);
  39 };
  40
  41 /**
  42  * Constructs the Elements that make up the UI.
  43  * @returns  {Element}  An element ready for insertion into DOM.
  44  */
  45 armadillo.File.prototype.draw = function() {
  46   // Create the element if it does not exist.  If it does, remove all children.
  47   if (!this.element_) {
  48     this.element_ = goog.dom.createElement('li');
  49     this.element_.representedObject = this;
  50     this.clickListener_ = goog.events.listen(this.element_,
  51         goog.events.EventType.CLICK, this.clickHandler_, false, this);
  52     if (!this.isSpecial_()) {
  53       this.mouseOverListener_ = goog.events.listen(this.element_,
  54           goog.events.EventType.MOUSEOVER, this.hoverHandler_, false, this);
  55       this.mouseOutListener_ = goog.events.listen(this.element_,
  56           goog.events.EventType.MOUSEOUT, this.hoverHandler_, false, this);
  57     }
  58   }
  59   goog.dom.removeChildren(this.element_);
  60
  61   // Set the name of the entry.
  62   goog.dom.setTextContent(this.element_, this.name_);
  63
  64   // Create the edit button.
  65   if (!this.isSpecial_()) {
  66     this.button_ = goog.dom.createElement('button');
  67     goog.dom.setTextContent(this.button_, 'Edit');
  68     goog.dom.appendChild(this.element_, this.button_);
  69     this.button_.style.display = 'none';
  70     this.buttonListener_ = goog.events.listen(this.button_,
  71         goog.events.EventType.CLICK, this.buttonClickHandler_, false, this);
  72   }
  73
  74   return this.element_;
  75 };
  76
  77 /**
  78  * Click handler for the list element.
  79  * @param  {Event}  e
  80  */
  81 armadillo.File.prototype.clickHandler_ = function(e) {
  82   if (this.isDirectory_) {
  83     app.navigate(this.name_);
  84   }
  85 };
  86
  87 /**
  88  * Hover event handler for the list element.  This can handle both mouseover
  89  * and mouseout events.
  90  * @param  {Event} e
  91  */
  92 armadillo.File.prototype.hoverHandler_ = function(e) {
  93   var display = (e.type == goog.events.EventType.MOUSEOVER);
  94   this.button_.style.display = (display ? '' : 'none');
  95 };
  96
  97 /**
  98  * Click handler for the button element.
  99  * @param  {Event}  e
 100  */
 101 armadillo.File.prototype.buttonClickHandler_ = function(e) {
 102   e.stopPropagation();
 103   alert('choose your bidding');
 104 };
 105
 106 /**
 107  * Returns TRUE if this File is not a real file, but a special kind.
 108  * @returns boolean
 109  */
 110 armadillo.File.prototype.isSpecial_ = function() {
 111   return this.name_ == '../';
 112 };