web_frontend/path_control.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.PathControl');
  11
  12 goog.require('goog.array');
  13 goog.require('goog.ui.Component');
  14 goog.require('goog.ui.FilteredMenu');
  15 goog.require('goog.ui.LabelInput');
  16 goog.require('goog.ui.MenuButton');
  17 goog.require('goog.ui.MenuItem');
  18
  19 /**
  20  * Creates a new path editing control for a given path.
  21  * @param  {string}  path  The path to create an editor for
  22  * @param  {bool} editLastComponent  Whether the last component should be shown as an edit box
  23  * @param  {DomHelper}  opt_domHelper  Optional DOM helper
  24  * @constructor
  25  */
  26 armadillo.PathControl = function(path, editLastComponent, opt_domHelper) {
  27   goog.ui.Component.call(this, opt_domHelper);
  28
  29   /**
  30    * Full path of the control.
  31    * @type  {string}
  32    */
  33   this.path_ = null;
  34
  35   /**
  36    * The name of the file at the |path_|.
  37    * @type  {string}
  38    */
  39   this.name_ = null;
  40
  41   this.setPath(path);
  42
  43   /**
  44    * Whether or not the last component is editable.
  45    * @type  {bool}
  46    */
  47   this.editableLastComponent_ = editLastComponent;
  48
  49   /**
  50    * List of path components
  51    * @type  {Array}
  52    */
  53   this.components_ = new Array();
  54 };
  55 goog.inherits(armadillo.PathControl, goog.ui.Component);
  56
  57 /**
  58  * Disposer
  59  * @protected
  60  */
  61 armadillo.PathControl.prototype.disposeInternal = function() {
  62   armadillo.PathControl.superClass_.disposeInternal.call(this);
  63   this.components_ = null;
  64 };
  65
  66 /**
  67  * Sets the path.
  68  * @param  {string}  path
  69  */
  70 armadillo.PathControl.prototype.setPath = function(path) {
  71   this.path_ = app.stripLastPathComponent(path);
  72   this.name_ = path.substr(this.path_.length);
  73   console.log(this.path_ + ' = ' + this.name_);
  74 };
  75
  76 /**
  77  * Creates a new path control object.
  78  */
  79 armadillo.PathControl.prototype.createDom = function() {
  80   this.decorateInternal(this.dom_.createElement('div'));
  81 };
  82
  83 /**
  84  * @inheritDoc
  85  */
  86 armadillo.PathControl.prototype.canDecorate = function() {
  87   return true;
  88 };
  89
  90 /**
  91  * Decorates the given element into a path control.
  92  * @param  {Element}  element
  93  */
  94 armadillo.PathControl.prototype.decorateInternal = function(element) {
  95   this.element_ = element;
  96   var components = this.path_.split('/');
  97
  98   // If this is an item that lives at the root, generate a special node for
  99   // moving between items at the top level.
 100   components[0] = '/';
 101
 102   // If the last component is emtpy, do not use it because it means a directory
 103   // is being moved.
 104   if (components[components.length - 1] == '') {
 105     goog.array.removeAt(components, components.length - 1);
 106   }
 107
 108   var path = '';
 109   goog.array.forEach(components, function (part, i) {
 110     this.addChild(this.createComponentNode_(path, part), true);
 111     path = app.joinPath(path, part);
 112   }, this);
 113
 114   var nameComponent = null;
 115   if (this.editableLastComponent_) {
 116     var attrs = {
 117       'type' : 'text',
 118       'name' : 'pathName',
 119       'value' : this.name_
 120     };
 121     nameComponent = new goog.ui.Control(this.dom_.createDom('input', attrs));
 122     nameComponent.setAllowTextSelection(true);
 123     nameComponent.setHandleMouseEvents(true);
 124   } else {
 125     nameComponent = new goog.ui.Control(this.name_);
 126   }
 127   this.addChild(nameComponent, true);
 128   goog.dom.classes.add(nameComponent.getElement(), 'goog-inline-block');
 129 };
 130
 131 /**
 132  * Creates a node for a single path component.
 133  * @param  {string}  path  The path up to this point.
 134  * @param  {string}  name  The current component after |path|.
 135  */
 136 armadillo.PathControl.prototype.createComponentNode_ = function(path, name) {
 137   var menu = new goog.ui.FilteredMenu();
 138   menu.setFilterLabel(name);
 139   menu.setAllowMultiple(false);
 140   menu.setOpenFollowsHighlight(true);
 141   goog.events.listen(menu, goog.ui.Component.EventType.ACTION,
 142       this.componentChanged_, false, this);
 143   this.fetchMenuContents_(path, name, menu);
 144
 145   var button = new goog.ui.MenuButton(name, menu, null, this.dom_);
 146   button.setFocusablePopupMenu(true);
 147   button.setScrollOnOverflow(true);
 148   button.setVisible(true);
 149   return button;
 150 };
 151
 152 /**
 153  * Queries the back-end for all the items at a given path and attaches them to
 154  * the given menu.
 155  * @param  {string}  path  The path to get a list of items in
 156  * @param  {string}  name  The name to select
 157  * @param  {goog.ui.Menu}  The menu to attach items to
 158  */
 159 armadillo.PathControl.prototype.fetchMenuContents_ = function(path, name, menu) {
 160   var callback = function(e) {
 161     var data = e.target.getResponseJson();
 162     if (data['error']) {
 163       app.showError(data['message']);
 164       return;
 165     }
 166     if (path == '') {
 167       // If this is the root path element, make sure the root is accessible for
 168       // moving items.
 169       goog.array.insertAt(data, '/', 0);
 170     }
 171     goog.array.forEach(data, function (caption) {
 172       // It only makes sense to be able to move into directories.
 173       if (!app.isDirectory(caption)) {
 174         return;
 175       }
 176       var item = new goog.ui.MenuItem(caption);
 177       item.setValue(app.joinPath(path, name, caption));
 178       menu.addItem(item);
 179       if (caption == name) {
 180         menu.setHighlighted(item);
 181       }
 182     });
 183   };
 184   app.sendRequest('list', {'path' : app.joinPath(path, name)}, callback);
 185 };
 186
 187 /**
 188  * Handler for changing a component of the control.
 189  * @param  {Event}  e
 190  */
 191 armadillo.PathControl.prototype.componentChanged_ = function(e) {
 192   console.log(e.target.getValue());
 193   this.path_ = e.target.getValue();
 194   this.removeChildren(true);
 195   this.decorateInternal(this.element_);
 196 };