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  * Gets the new path.
  78  * @returns  {string}
  79  */
  80 armadillo.PathControl.prototype.getPath = function() {
  81   return app.joinPath(this.path_, this.name_);
  82 };
  83
  84 /**
  85  * Creates a new path control object.
  86  */
  87 armadillo.PathControl.prototype.createDom = function() {
  88   this.decorateInternal(this.dom_.createElement('div'));
  89 };
  90
  91 /**
  92  * @inheritDoc
  93  */
  94 armadillo.PathControl.prototype.canDecorate = function() {
  95   return true;
  96 };
  97
  98 /**
  99  * Decorates the given element into a path control.
 100  * @param  {Element}  element
 101  */
 102 armadillo.PathControl.prototype.decorateInternal = function(element) {
 103   this.element_ = element;
 104   var components = this.path_.split('/');
 105
 106   // If this is an item that lives at the root, generate a special node for
 107   // moving between items at the top level.
 108   components[0] = '/';
 109
 110   // If the last component is emtpy, do not use it because it means a directory
 111   // is being moved.
 112   if (components[components.length - 1] == '') {
 113     goog.array.removeAt(components, components.length - 1);
 114   }
 115
 116   var path = '';
 117   goog.array.forEach(components, function (part, i) {
 118     this.addChild(this.createComponentNode_(path, part), true);
 119     path = app.joinPath(path, part);
 120   }, this);
 121
 122   var nameComponent = null;
 123   if (this.editableLastComponent_) {
 124     var attrs = {
 125       'type' : 'text',
 126       'name' : 'pathName',
 127       'value' : this.name_
 128     };
 129     nameComponent = new goog.ui.Control(this.dom_.createDom('input', attrs));
 130     nameComponent.setAllowTextSelection(true);
 131     nameComponent.setHandleMouseEvents(true);
 132   } else {
 133     nameComponent = new goog.ui.Control(this.name_);
 134   }
 135   this.addChild(nameComponent, true);
 136   goog.dom.classes.add(nameComponent.getElement(), 'goog-inline-block');
 137 };
 138
 139 /**
 140  * Creates a node for a single path component.
 141  * @param  {string}  path  The path up to this point.
 142  * @param  {string}  name  The current component after |path|.
 143  */
 144 armadillo.PathControl.prototype.createComponentNode_ = function(path, name) {
 145   var menu = new goog.ui.FilteredMenu();
 146   menu.setFilterLabel(name);
 147   menu.setAllowMultiple(false);
 148   menu.setOpenFollowsHighlight(true);
 149   goog.events.listen(menu, goog.ui.Component.EventType.ACTION,
 150       this.componentChanged_, false, this);
 151   this.fetchMenuContents_(path, name, menu);
 152
 153   var button = new goog.ui.MenuButton(name, menu, null, this.dom_);
 154   button.setFocusablePopupMenu(true);
 155   button.setScrollOnOverflow(true);
 156   button.setVisible(true);
 157   return button;
 158 };
 159
 160 /**
 161  * Queries the back-end for all the items at a given path and attaches them to
 162  * the given menu.
 163  * @param  {string}  path  The path to get a list of items in
 164  * @param  {string}  name  The name to select
 165  * @param  {goog.ui.Menu}  The menu to attach items to
 166  */
 167 armadillo.PathControl.prototype.fetchMenuContents_ = function(path, name, menu) {
 168   var callback = function(e) {
 169     var data = e.target.getResponseJson();
 170     if (data['error']) {
 171       app.showError(data['message']);
 172       return;
 173     }
 174     if (path == '') {
 175       // If this is the root path element, make sure the root is accessible for
 176       // moving items.
 177       goog.array.insertAt(data, '/', 0);
 178     }
 179     goog.array.forEach(data, function (caption) {
 180       // It only makes sense to be able to move into directories.
 181       if (!app.isDirectory(caption)) {
 182         return;
 183       }
 184       var item = new goog.ui.MenuItem(caption);
 185       item.setValue(app.joinPath(path, name, caption));
 186       menu.addItem(item);
 187       if (caption == name) {
 188         menu.setHighlighted(item);
 189       }
 190     });
 191   };
 192   app.sendRequest('list', {'path' : app.joinPath(path, name)}, callback);
 193 };
 194
 195 /**
 196  * Handler for changing a component of the control.
 197  * @param  {Event}  e
 198  */
 199 armadillo.PathControl.prototype.componentChanged_ = function(e) {
 200   console.log(e.target.getValue());
 201   this.path_ = e.target.getValue();
 202   this.removeChildren(true);
 203   this.decorateInternal(this.element_);
 204 };