web_frontend/actor.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.Actor');
  11 goog.provide('armadillo.Actor.TileControlRenderer_');
  12
  13 goog.require('armadillo.PathControl');
  14 goog.require('goog.array');
  15 goog.require('goog.dom');
  16 goog.require('goog.events');
  17 goog.require('goog.events.EventHandler');
  18 goog.require('goog.positioning.ClientPosition');
  19 goog.require('goog.positioning.Corner');
  20 goog.require('goog.style');
  21 goog.require('goog.ui.Container');
  22 goog.require('goog.ui.Dialog');
  23 goog.require('goog.ui.Popup');
  24
  25 /**
  26  * The Actor is a popup that displays the various actions that can be performed
  27  * on a given File.
  28  * @param  {armadillo.File}  file  The file to act on.
  29  * @param  {goog.dom.DomHelper}  opt_domHelper
  30  * @constructor
  31  */
  32 armadillo.Actor = function(file, opt_domHelper) {
  33   goog.ui.Container.call(this, null, null, opt_domHelper);
  34
  35   /**
  36    * The file object on which this acts.
  37    * @type  {armadillo.File}
  38    */
  39   this.file_ = file;
  40
  41   /**
  42    * Registrar for all the Actor's events.
  43    * @type  {goog.events.EventHandler}
  44    */
  45   this.eh_ = new goog.events.EventHandler();
  46
  47   /**
  48    * The Container that holds the display element.
  49    * @type  {goog.ui.Popup}
  50    */
  51   this.popup_ = new goog.ui.Popup(this.element_);
  52   this.eh_.listenOnce(this.popup_, goog.ui.PopupBase.EventType.HIDE,
  53       this.onPopupClosed_, false, this);
  54
  55   /**
  56    * The UI element used for a specific action.
  57    * @type  {goog.Disposable}
  58    */
  59   this.actionObject_ = null;
  60
  61   armadillo.Actor.actors_.push(this);
  62 }
  63 goog.inherits(armadillo.Actor, goog.ui.Container);
  64
  65 /**
  66  * An array of all the Actors that have been created.
  67  */
  68 armadillo.Actor.actors_ = new Array();
  69
  70 /**
  71  * The different options that the Actor can perform.
  72  */
  73 armadillo.Actor.options_ = {
  74   OPEN : 'open',
  75   MOVE : 'move',
  76   RENAME : 'rename',
  77   DELETE : 'delete'
  78 };
  79
  80 /**
  81  * String values for the options.
  82  */
  83 armadillo.Actor.optionStrings_ = {
  84   'open' : 'Open',
  85   'move' : 'Move',
  86   'rename' : 'Rename',
  87   'delete' : 'Delete'
  88 };
  89
  90 /**
  91  * A global property that should be checked to see if an actor is present,
  92  * creating a modal session.
  93  */
  94 armadillo.Actor.isModal = function() {
  95   var isVisible = false;
  96   goog.array.forEach(armadillo.Actor.actors_, function (e) {
  97     isVisible |= e.popup_.isVisible();
  98   });
  99   return isVisible;
 100 };
 101
 102 /**
 103  * Disposer
 104  * @protected
 105  */
 106 armadillo.Actor.prototype.disposeInternal = function() {
 107   armadillo.Actor.superClass_.disposeInternal.call(this);
 108
 109   this.eh_.dispose();
 110
 111   // Remove the actor display element.
 112   goog.dom.removeNode(this.element_);
 113   this.element_ = null;
 114
 115   // Kill the popup.
 116   this.popup_.dispose();
 117   this.popup_ = null;
 118
 119   if (this.actionObject_) {
 120     this.actionObject_.dispose();
 121     this.actionObject_ = null;
 122   }
 123
 124   // Remove the actor from the list.
 125   goog.array.remove(armadillo.Actor.actors_, this);
 126
 127   this.file_ = null;
 128 };
 129
 130 /**
 131  * Shows the popup.
 132  * @param  {int}  x  The X position to show at
 133  * @param  {int}  y  The Y position to show at
 134  */
 135 armadillo.Actor.prototype.show = function(x, y) {
 136   if (armadillo.Actor.isModal())
 137     return;
 138   this.popup_.setPinnedCorner(goog.positioning.Corner.TOP_LEFT);
 139   this.popup_.setPosition(new goog.positioning.ClientPosition(x, y));
 140   this.popup_.setHideOnEscape(true);
 141   this.render();
 142   this.popup_.setVisible(true);
 143   this.file_.setHighlight(armadillo.File.Highlight.ACTIVE);
 144 };
 145
 146 /**
 147  * Hides the popup.
 148  */
 149 armadillo.Actor.prototype.hide = function() {
 150   this.popup_.setVisible(false);
 151 };
 152
 153
 154 /**
 155  * Creates a new path control object.
 156  */
 157 armadillo.Actor.prototype.createDom = function() {
 158   this.decorateInternal(this.dom_.createDom('div', 'actor'));
 159   this.popup_.setElement(this.element_);
 160 };
 161
 162 /**
 163  * @inheritDoc
 164  */
 165 armadillo.Actor.prototype.canDecorate = function() {
 166   return false;
 167 };
 168
 169 /**
 170  * Decorates the given element into a path control.
 171  * @param  {Element}  element
 172  */
 173 armadillo.Actor.prototype.decorateInternal = function(element) {
 174   this.element_ = element;
 175   this.dom_.removeChildren(this.element_);
 176   for (var option in armadillo.Actor.options_) {
 177     var tile = this.createTile_(option);
 178     if (tile) {
 179       this.addChild(tile, true);
 180     }
 181   }
 182 };
 183
 184 /**
 185  * Creates the DOM Element that is inserted into the popup.
 186  * @param  {armadillo.Actor.options_}  Key of the option to create
 187  * @returns  {goog.ui.Control}
 188  */
 189 armadillo.Actor.prototype.createTile_ = function(option) {
 190   var value = armadillo.Actor.options_[option];
 191
 192   // Create the title element.
 193   var title = this.dom_.createDom('span', 'title',
 194       armadillo.Actor.optionStrings_[value]);
 195
 196   var tile = new goog.ui.Control(title, new armadillo.Actor.TileControlRenderer_());
 197   tile.actorOption = value;
 198
 199   // Cannot open non-directory files.
 200   if (value == armadillo.Actor.options_.OPEN && !this.file_.isDirectory()) {
 201     return null;
 202   }
 203
 204   this.eh_.listen(tile, goog.ui.Component.EventType.ACTION,
 205       this.tileClickHandler_, false, this);
 206   return tile;
 207 };
 208
 209 /**
 210  * Click handler for individual tiles.
 211  * @param  {Event}  e
 212  */
 213 armadillo.Actor.prototype.tileClickHandler_ = function(e) {
 214   var option = e.target.actorOption;
 215   if (option == armadillo.Actor.options_.OPEN) {
 216     // TODO: assert that this.file_.isDirectory().
 217     app.navigate(this.file_.getName());
 218   } else if (option == armadillo.Actor.options_.MOVE ||
 219              option == armadillo.Actor.options_.RENAME) {
 220     this.performMove_();
 221   } else if (option == armadillo.Actor.options_.DELETE) {
 222     this.performDelete_();
 223   }
 224   this.hide();
 225 };
 226
 227 /**
 228  * Subroutine to handle bringing up the move confirmation UI.
 229  * @private
 230  */
 231 armadillo.Actor.prototype.performMove_ = function() {
 232   this.actionObject_ = this.createActionDialog_();
 233   this.actionObject_.setTitle('Move File');
 234
 235   var editor = new armadillo.PathControl(this.file_.getFullPath(), true);
 236   this.actionObject_.addChild(editor, true);
 237
 238   var closeCallback = function(e) {
 239     if (e.key != goog.ui.Dialog.DefaultButtonKeys.CANCEL) {
 240       var newPath = editor.getPath();
 241       this.file_.move(newPath);
 242     }
 243     this.dispose();
 244   };
 245   // Will be removed when the event source closes.
 246   this.eh_.listen(this.actionObject_, goog.ui.Dialog.SELECT_EVENT,
 247       closeCallback, false, this);
 248
 249   this.actionObject_.setVisible(true);
 250   var position = goog.style.getPosition(this.actionObject_.getElement());
 251   goog.style.setPosition(this.actionObject_.getElement(), position.x, '10%');
 252 };
 253
 254 /**
 255  * Subroutine to handle bringing up the delete confirmation UI.
 256  * @private
 257  */
 258 armadillo.Actor.prototype.performDelete_ = function() {
 259   this.actionObject_ = this.createActionDialog_();
 260   this.actionObject_.setTitle('Confirm Delete');
 261
 262   var container = this.actionObject_.getContentElement();
 263   var content = goog.dom.createDom('span', null,
 264       'Are you sure you want to delete:',
 265       goog.dom.createElement('br'),
 266       goog.dom.createDom('strong', null, this.file_.getName()));
 267   goog.dom.appendChild(container, content);
 268
 269   var closeCallback = function(e) {
 270     if (e.key != goog.ui.Dialog.DefaultButtonKeys.CANCEL) {
 271       this.file_.remove();
 272     }
 273     this.dispose();
 274   };
 275   // Will be removed when the event source closes.
 276   this.eh_.listen(this.actionObject_, goog.ui.Dialog.SELECT_EVENT,
 277       closeCallback, false, this);
 278
 279   this.actionObject_.setVisible(true);
 280 };
 281
 282 /**
 283  * Creates a new instance of a Dialog that has some basic properties set that
 284  * are common to performing actions.
 285  * @private
 286  */
 287 armadillo.Actor.prototype.createActionDialog_ = function() {
 288   var confirm = new goog.ui.Dialog();
 289   confirm.setDisposeOnHide(true);
 290   confirm.setEscapeToCancel(true);
 291   confirm.setModal(true);
 292   confirm.setDraggable(false);
 293   confirm.setHasTitleCloseButton(false);
 294   return confirm;
 295 };
 296
 297 /**
 298  * Event handler for when this.popup_ closes.
 299  * @param  {Event}  e
 300  */
 301 armadillo.Actor.prototype.onPopupClosed_ = function(e) {
 302   // If an action is not being performed, then dispose the Actor. Otherwise,
 303   // this will get cleaned up after the actionObject_ closes.
 304   if (!this.actionObject_) {
 305     this.file_.setHighlight(armadillo.File.Highlight.SELECTED);
 306     this.dispose();
 307   }
 308 };
 309
 310 /**
 311  * Tile Control Renderer
 312  * @constructor
 313  */
 314 armadillo.Actor.TileControlRenderer_ = function() {
 315   goog.ui.ControlRenderer.call(this);
 316 };
 317 goog.inherits(armadillo.Actor.TileControlRenderer_, goog.ui.ControlRenderer);
 318
 319 /**
 320  * Returns the control's contents wrapped in a DIV, with the renderer's own
 321  * CSS class and additional state-specific classes applied to it.
 322  * @param {goog.ui.Control} control Control to render.
 323  * @return {Element} Root element for the control.
 324  */
 325 goog.ui.ControlRenderer.prototype.createDom = function(control) {
 326   // Create and return DIV wrapping contents.
 327   return control.getDomHelper().createDom('div', 'tile', control.getContent());
 328 };