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Diffstat (limited to 'webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/type/Selection.js')
-rw-r--r-- | webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/type/Selection.js | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/type/Selection.js b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/type/Selection.js new file mode 100644 index 0000000000..e4025bec42 --- /dev/null +++ b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/type/Selection.js @@ -0,0 +1,180 @@ +/* ************************************************************************ + + qooxdoo - the new era of web development + + http://qooxdoo.org + + Copyright: + 2004-2007 1&1 Internet AG, Germany, http://www.1and1.org + + License: + LGPL: http://www.gnu.org/licenses/lgpl.html + EPL: http://www.eclipse.org/org/documents/epl-v10.php + See the LICENSE file in the project's top-level directory for details. + + Authors: + * Sebastian Werner (wpbasti) + * Andreas Ecker (ecker) + +************************************************************************ */ + +/* ************************************************************************ + + + +************************************************************************ */ + +/** + * Helper for qx.manager.selection.SelectionManager, contains data for selections + * + * @param vManager {Object} a class which implements a getItemHashCode(oItem) method + */ +qx.OO.defineClass("qx.type.Selection", qx.core.Object, +function(vManager) +{ + qx.core.Object.call(this); + + this._manager = vManager; + this.removeAll(); +}); + + + + + +/* +--------------------------------------------------------------------------- + USER METHODS +--------------------------------------------------------------------------- +*/ + +/** + * Add an item to the selection + * + * @param oItem {var} item to add + */ +qx.Proto.add = function(oItem) { + this._storage[this.getItemHashCode(oItem)] = oItem; +}; + + +/** + * Remove an item from the selection + * + * @param oItem {var} item to remove + */ +qx.Proto.remove = function(oItem) { + delete this._storage[this.getItemHashCode(oItem)]; +}; + + +/** + * Remove all items from the selection + */ +qx.Proto.removeAll = function() { + this._storage = {}; +}; + + +/** + * Check whether the selection contains a given item + * + * @param oItem {var} item to check for + * @return {Boolean} whether the selection contains the item + */ +qx.Proto.contains = function(oItem) { + return this.getItemHashCode(oItem) in this._storage; +}; + + +/** + * Convert selection to an array + * + * @return {Array} array representation of the selection + */ +qx.Proto.toArray = function() +{ + var res = []; + + for (var key in this._storage) { + res.push(this._storage[key]); + } + + return res; +}; + + +/** + * Return first element of the Selection + * + * @return {var} first item of the selection + */ +qx.Proto.getFirst = function() +{ + for (var key in this._storage) { + return this._storage[key]; + } +} + + +/** + * Get a string representation of the Selection. The return value can be used to compare selections. + * + * @return {String} string representation of the Selection + */ +qx.Proto.getChangeValue = function() +{ + var sb = []; + + for (var hc in this._storage) { + sb.push(hc); + } + + sb.sort(); + return sb.join(";"); +}; + + +/** + * Compute a hash code for an item using the manager + * + * @param oItem {var} the item + * @return {var} unique hash code for the item + */ +qx.Proto.getItemHashCode = function(oItem) { + return this._manager.getItemHashCode(oItem); +}; + + +/** + * Whether the selection is empty + * + * @return {Boolean} whether the selection is empty + */ +qx.Proto.isEmpty = function() { + return qx.lang.Object.isEmpty(this._storage); +}; + + + + +/* +--------------------------------------------------------------------------- + DISPOSER +--------------------------------------------------------------------------- +*/ + +/** + * Destructor + */ +qx.Proto.dispose = function() +{ + if (this.getDisposed()) { + return; + } + + this._storage = null; + this._manager = null; + + qx.core.Object.prototype.dispose.call(this); +};
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