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Diffstat (limited to 'webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/ui/treefullcontrol/TreeRowStructure.js')
-rw-r--r-- | webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/ui/treefullcontrol/TreeRowStructure.js | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/ui/treefullcontrol/TreeRowStructure.js b/webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/ui/treefullcontrol/TreeRowStructure.js new file mode 100644 index 0000000000..4fc32ef31e --- /dev/null +++ b/webapps/qooxdoo-0.6.3-sdk/frontend/framework/source/class/qx/ui/treefullcontrol/TreeRowStructure.js @@ -0,0 +1,260 @@ +/* ************************************************************************ + + qooxdoo - the new era of web development + + http://qooxdoo.org + + Copyright: + 2006 by Derrell Lipman + + License: + LGPL 2.1: http://www.gnu.org/licenses/lgpl.html + + Authors: + * Derrell Lipman (derrell) + +************************************************************************ */ + +/* ************************************************************************ + +#module(ui_treefullcontrol) + +************************************************************************ */ + +/** + * The structure of a tree row. + * + * This is a singleton class. The constructor is not accessed by users; + * instead, to obtain the one and only TreeRowStructure object, call either + * + * qx.ui.treefullcontrol.TreeRowStructure.newRow() + * + * or + * + * qx.ui.treefullcontrol.TreeRowStructure.standard(). + * + * The structure of a tree row is provided by a + * qx.ui.treefullcontrol.TreeRowStructure. The order of elements added to + * this object is the order in which they will be presented in a tree row. + * + * The three standard parts of a tree: the indentation (and its associated + * tree-lines, if enabled), the icon (selected or unselected), and the label + * are added to the structure in the desired order by calling, respectively, + * the methods addIndent(), addIcon() and addLabel(). + * + * By default, indentation will appear at the beginning of the tree row. This + * can be changed by calling the addIndent() method after having calling other + * add*() methods on this object. If indentation is to be at the beginning of + * the tree row, simply do not call addIndent(). + * + * Any other object which is valid within a qx.ui.layout.HorizontalBoxLayout + * may be added to the structure using addObject(). If the object has no + * special treatment, it may be made anonymous with obj.SetAnonymous(true). + * Otherwise, all handling for the object should be done by the application. + * + * A "standard" (traditional) tree row would be generated like this: + * + * treeRowStructure = qx.ui.treefullcontrol.TreeRowStructure.standard("Trash"); + * + * which equates to issuing these commands: + * + * treeRowStructure = qx.ui.treefullcontrol.TreeRowStructure.newRow(); + * + * //treeRowStructure.addIndent() // defaults to here; no need to call + * treeRowStructure.addIcon(); + * treeRowStructure.addLabel("Trash"); + * + * The former method is typically preferred. + * + * An example of a more sophisticated structure: + * + * treeRowStructure = qx.ui.treefullcontrol.TreeRowStructure.newRow(); + * + * // A left-justified icon + * obj = new qx.ui.basic.Image("icon/16/alarm.png"); + * treeRowStructure.addObject(obj, true); + * + * // Here's our indentation and tree-lines + * treeRowStructure.addIndent(); + * + * // The standard tree icon follows + * treeRowStructure.addIcon("icon/16/desktop.png","icon/16/dictionary.png"); + * + * // Right after the tree icon is a checkbox + * obj = new qx.ui.form.CheckBox(null, 23, null, false); + * obj.setPadding(0, 0); + * treeRowStructure.addObject(obj, true); + * + * // The label + * treeRowStructure.addLabel("Trash"); + * + * // All else should be right justified + * obj = new qx.ui.basic.HorizontalSpacer; + * treeRowStructure.addObject(obj, true); + * + * // Add a file size, date and mode + * obj = new qx.ui.basic.Label("23kb"); + * obj.setWidth(50); + * treeRowStructure.addObject(obj, true); + * obj = new qx.ui.basic.Label("11 Sept 1959"); + * obj.setWidth(150); + * treeRowStructure.addObject(obj, true); + * obj = new qx.ui.basic.Label("-rw-r--r--"); + * obj.setWidth(80); + * treeRowStructure.addObject(obj, true); + */ + +qx.OO.defineClass("qx.ui.treefullcontrol.TreeRowStructure", qx.core.Object, +function() +{ + qx.core.Object.call(this); +}); + + +/** + * Prepare to define a new row. + * + * This reinitializes the singleton TreeRowStructure so that it is ready to + * define a new tree row. + * + * @return The singleton itself, purely for convenience. + */ +qx.Proto.newRow = function() +{ + /* Create the indent, icon, and label objects */ + this._indentObject = new qx.ui.embed.HtmlEmbed; + this._iconObject = new qx.ui.basic.Image; + this._labelObject = new qx.ui.basic.Label; + + /* Create an object to hold the ordering of row objects */ + this._fields = new Array; + + /* Create an object to hold the icon names */ + this._icons = new Object; + + /* Initially assume that indentation goes at the beginning of the row */ + this._fields.push(this._indentObject); + + /* Set initial flags */ + this._indentAdded = false; + this._iconAdded = false; + this._labelAdded = false; + + /* Return the singleton (from which we were called) */ + return this; +} + +/** + * Define a new row with the 'standard' structure. + * + * This reinitializes the singleton TreeRowStructure to the state of a + * standard'or traditional tree row: + * - indentation + * - icon + * - label + * + * The icon parameters may be omitted in which case the defaults will be + * used. If the label parameter is omitted, no label will appear. + * + * @param vLabel {string} The label text + * @param vIcon {string} Relative path to the 'non-selected' icon + * @param vIconSelected {string} Relative path to the 'selected' icon + * + * @return The singleton itself, purely for convenience. + */ +qx.Proto.standard = function(vLabel, vIcon, vIconSelected) +{ + this.newRow(); + this.addIcon(vIcon, vIconSelected); + this.addLabel(vLabel); + + return this; +} + +qx.Proto.addIndent = function() +{ + /* If the assumed indent object is in use... */ + if (! this._indentAdded) + { + /* ... then remove it. */ + this._fields.shift(); + this._indentAdded = true; + } + else + { + throw new Error("Indent object added more than once."); + } + + /* Add the indentation to the structure */ + this._fields.push(this._indentObject); +} + +qx.Proto.addIcon = function(vIcon, vIconSelected) +{ + /* Ensure only one standard icon is added */ + if (! this._iconAdded) + { + this._iconAdded = true; + } + else + { + throw new Error("Icon object added more than once."); + } + + /* Track the two icon names */ + this._icons.unselected = vIcon; + this._icons.selected = vIconSelected; + + /* Add the icon to the structure */ + this._fields.push(this._iconObject); +} + +qx.Proto.addLabel = function(vLabel) +{ + /* Ensure only one standard label is added */ + if (! this._labelAdded) + { + this._labelAdded = true; + } + else + { + throw new Error("Label added more than once."); + } + + /* Track the label text */ + this._label = vLabel; + + /* Add the label to the structure */ + this._fields.push(this._labelObject); +} + +/* + * Add an object to the tree row structure. For convenience, vAnonymous can + * be provided, and if a boolean value is provided, vObj.setAnonymous() is + * called with the provided value. If the object has already been + * setAnonymous or if there is no need to do so, then provide no value for + * vAnonymous or pass 'null'. + */ +qx.Proto.addObject = function(vObj, vAnonymous) +{ + /* Is requested, set this object's anonymous state */ + if (typeof vAnonymous == "boolean") + { + vObj.setAnonymous(vAnonymous); + } + + /* Add this user-specified object to the structure */ + this._fields.push(vObj); +} + + +/* +--------------------------------------------------------------------------- + DEFER SINGLETON INSTANCE +--------------------------------------------------------------------------- +*/ + +/** + * Singleton Instance Getter + */ +qx.Class.getInstance = qx.util.Return.returnInstance; |