X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/ee06f37b0f6f6d94cd05a6ffae556660f7c4a2bc..c930e9176a5a85509c5b0230e2bff5c22a591432:/src/widgets/tree/TreeFilter.js

diff --git a/src/widgets/tree/TreeFilter.js b/src/widgets/tree/TreeFilter.js
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+++ b/src/widgets/tree/TreeFilter.js
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+/*!
+ * Ext JS Library 3.0.0
+ * Copyright(c) 2006-2009 Ext JS, LLC
+ * licensing@extjs.com
+ * http://www.extjs.com/license
+ */
+/**
+ * @class Ext.tree.TreeFilter
+ * Note this class is experimental and doesn't update the indent (lines) or expand collapse icons of the nodes
+ * @param {TreePanel} tree
+ * @param {Object} config (optional)
+ */
+Ext.tree.TreeFilter = function(tree, config){
+    this.tree = tree;
+    this.filtered = {};
+    Ext.apply(this, config);
+};
+
+Ext.tree.TreeFilter.prototype = {
+    clearBlank:false,
+    reverse:false,
+    autoClear:false,
+    remove:false,
+
+     /**
+     * Filter the data by a specific attribute.
+     * @param {String/RegExp} value Either string that the attribute value
+     * should start with or a RegExp to test against the attribute
+     * @param {String} attr (optional) The attribute passed in your node's attributes collection. Defaults to "text".
+     * @param {TreeNode} startNode (optional) The node to start the filter at.
+     */
+    filter : function(value, attr, startNode){
+        attr = attr || "text";
+        var f;
+        if(typeof value == "string"){
+            var vlen = value.length;
+            // auto clear empty filter
+            if(vlen == 0 && this.clearBlank){
+                this.clear();
+                return;
+            }
+            value = value.toLowerCase();
+            f = function(n){
+                return n.attributes[attr].substr(0, vlen).toLowerCase() == value;
+            };
+        }else if(value.exec){ // regex?
+            f = function(n){
+                return value.test(n.attributes[attr]);
+            };
+        }else{
+            throw 'Illegal filter type, must be string or regex';
+        }
+        this.filterBy(f, null, startNode);
+	},
+
+    /**
+     * Filter by a function. The passed function will be called with each
+     * node in the tree (or from the startNode). If the function returns true, the node is kept
+     * otherwise it is filtered. If a node is filtered, its children are also filtered.
+     * @param {Function} fn The filter function
+     * @param {Object} scope (optional) The scope of the function (defaults to the current node)
+     */
+    filterBy : function(fn, scope, startNode){
+        startNode = startNode || this.tree.root;
+        if(this.autoClear){
+            this.clear();
+        }
+        var af = this.filtered, rv = this.reverse;
+        var f = function(n){
+            if(n == startNode){
+                return true;
+            }
+            if(af[n.id]){
+                return false;
+            }
+            var m = fn.call(scope || n, n);
+            if(!m || rv){
+                af[n.id] = n;
+                n.ui.hide();
+                return false;
+            }
+            return true;
+        };
+        startNode.cascade(f);
+        if(this.remove){
+           for(var id in af){
+               if(typeof id != "function"){
+                   var n = af[id];
+                   if(n && n.parentNode){
+                       n.parentNode.removeChild(n);
+                   }
+               }
+           }
+        }
+    },
+
+    /**
+     * Clears the current filter. Note: with the "remove" option
+     * set a filter cannot be cleared.
+     */
+    clear : function(){
+        var t = this.tree;
+        var af = this.filtered;
+        for(var id in af){
+            if(typeof id != "function"){
+                var n = af[id];
+                if(n){
+                    n.ui.show();
+                }
+            }
+        }
+        this.filtered = {};
+    }
+};