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   if (this.editableLastComponent_) {
 115     var input = new goog.ui.Control(this.dom_.createDom('input'));
 116     input.getElement().value = this.name_;
 117     this.addChild(input, true);
 118   } else {
 119     var label = new goog.ui.Control(this.name_);
 120     this.addChild(label, true);
 121     goog.dom.classes.add(label.getElement(), 'goog-inline-block');
 122   }
 123 };
 124
 125 /**
 126  * Creates a node for a single path component.
 127  * @param  {string}  path  The path up to this point.
 128  * @param  {string}  name  The current component after |path|.
 129  */
 130 armadillo.PathControl.prototype.createComponentNode_ = function(path, name) {
 131   var menu = new goog.ui.FilteredMenu();
 132   menu.setFilterLabel(name);
 133   menu.setAllowMultiple(false);
 134   menu.setOpenFollowsHighlight(true);
 135   goog.events.listen(menu, goog.ui.Component.EventType.ACTION,
 136       this.componentChanged_, false, this);
 137   this.fetchMenuContents_(path, name, menu);
 138
 139   var button = new goog.ui.MenuButton(name, menu, null, this.dom_);
 140   button.setFocusablePopupMenu(true);
 141   button.setScrollOnOverflow(true);
 142   button.setVisible(true);
 143   return button;
 144 };
 145
 146 /**
 147  * Queries the back-end for all the items at a given path and attaches them to
 148  * the given menu.
 149  * @param  {string}  path  The path to get a list of items in
 150  * @param  {string}  name  The name to select
 151  * @param  {goog.ui.Menu}  The menu to attach items to
 152  */
 153 armadillo.PathControl.prototype.fetchMenuContents_ = function(path, name, menu) {
 154   var callback = function(e) {
 155     var data = e.target.getResponseJson();
 156     if (data['error']) {
 157       app.showError(data['message']);
 158       return;
 159     }
 160     if (path == '') {
 161       // If this is the root path element, make sure the root is accessible for
 162       // moving items.
 163       goog.array.insertAt(data, '/', 0);
 164     }
 165     goog.array.forEach(data, function (caption) {
 166       // It only makes sense to be able to move into directories.
 167       if (!app.isDirectory(caption)) {
 168         return;
 169       }
 170       var item = new goog.ui.MenuItem(caption);
 171       item.setValue(app.joinPath(path, name, caption));
 172       menu.addItem(item);
 173       if (caption == name) {
 174         menu.setHighlighted(item);
 175       }
 176     });
 177   };
 178   app.sendRequest('list', {'path' : app.joinPath(path, name)}, callback);
 179 };
 180
 181 /**
 182  * Handler for changing a component of the control.
 183  * @param  {Event}  e
 184  */
 185 armadillo.PathControl.prototype.componentChanged_ = function(e) {
 186   console.log(e.target.getValue());
 187   this.path_ = e.target.getValue();
 188   this.removeChildren(true);
 189   this.decorateInternal(this.element_);
 190 };