Diffstat (limited to 'frontend/beta/js/YUI-extensions/tree/TreeSelectionModel.js') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | frontend/beta/js/YUI-extensions/tree/TreeSelectionModel.js | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/frontend/beta/js/YUI-extensions/tree/TreeSelectionModel.js b/frontend/beta/js/YUI-extensions/tree/TreeSelectionModel.js new file mode 100644 index 0000000..4fed88e --- a/dev/null +++ b/frontend/beta/js/YUI-extensions/tree/TreeSelectionModel.js @@ -0,0 +1,195 @@ +YAHOO.ext.tree.DefaultSelectionModel = function(){
+ this.selNode = null;
+
+ this.events = {
+ 'selectionchange' : true
+ };
+};
+
+YAHOO.extendX(YAHOO.ext.tree.DefaultSelectionModel, YAHOO.ext.util.Observable, {
+ init : function(tree){
+ this.tree = tree;
+ tree.el.mon('keydown', this.onKeyDown, this, true);
+ tree.on('click', this.onNodeClick, this, true);
+ },
+
+ onNodeClick : function(node, e){
+ this.select(node);
+ },
+
+ select : function(node){
+ if(this.selNode && this.selNode != node){
+ this.selNode.ui.onSelectedChange(false);
+ }
+ this.selNode = node;
+ node.ui.onSelectedChange(true);
+ this.fireEvent('selectionchange', this, node);
+ return node;
+ },
+
+ unselect : function(node){
+ if(this.selNode == node){
+ this.clearSelections();
+ }
+ },
+
+ clearSelections : function(){
+ var n = this.selNode;
+ if(n){
+ n.ui.onSelectedChange(false);
+ this.selNode = null;
+ this.fireEvent('selectionchange', this, null);
+ }
+ return n;
+ },
+
+ getSelectedNode : function(){
+ return this.selNode;
+ },
+
+ isSelected : function(node){
+ return this.selNode == node;
+ },
+
+ onKeyDown : function(e){
+ var s = this.selNode || this.lastSelNode;
+ // undesirable, but required
+ var sm = this;
+ if(!s){
+ return;
+ }
+ var k = e.getKey();
+ //alert(k)
+ switch(k){
+ case e.DOWN:
+ e.preventDefault();
+ if(s.firstChild && s.isExpanded()){
+ this.select(s.firstChild, e);
+ }else if(s.nextSibling){
+ this.select(s.nextSibling, e);
+ }else if(s.parentNode){
+ s.parentNode.bubble(function(){
+ if(this.nextSibling){
+ sm.select(this.nextSibling, e);
+ return false;
+ }
+ });
+ }
+ break;
+ case e.UP:
+ e.preventDefault();
+ var ps = s.previousSibling;
+ if(ps){
+ if(!ps.isExpanded()){
+ this.select(ps, e);
+ }else{
+ var lc = ps.lastChild;
+ while(lc && lc.isExpanded()){
+ lc = lc.lastChild;
+ }
+ this.select(lc, e);
+ }
+ }else if(s.parentNode && (this.tree.rootVisible || !s.parentNode.isRoot)){
+ this.select(s.parentNode, e);
+ }
+ break;
+ case e.RIGHT:
+ e.preventDefault();
+ if(s.hasChildNodes()){
+ if(!s.isExpanded()){
+ s.expand();
+ }else if(s.firstChild){
+ this.select(s.firstChild, e);
+ }
+ }
+ break;
+ case e.LEFT:
+ e.preventDefault();
+ if(s.hasChildNodes() && s.isExpanded()){
+ s.collapse();
+ }else if(s.parentNode && (this.tree.rootVisible || s.parentNode != this.tree.getRootNode())){
+ this.select(s.parentNode, e);
+ }
+ break;
+ };
+ }
+});
+
+YAHOO.ext.tree.MultiSelectionModel = function(){
+ this.selNodes = [];
+ this.selMap = {};
+ this.events = {
+ 'selectionchange' : true
+ };
+};
+
+YAHOO.extendX(YAHOO.ext.tree.MultiSelectionModel, YAHOO.ext.util.Observable, {
+ init : function(tree){
+ this.tree = tree;
+ tree.el.mon('keydown', this.onKeyDown, this, true);
+ tree.on('click', this.onNodeClick, this, true);
+ },
+
+ onNodeClick : function(node, e){
+ this.select(node, e, e.ctrlKey);
+ },
+
+ select : function(node, e, keepExisting){
+ if(keepExisting !== true){
+ this.clearSelections(true);
+ }
+ this.selNodes.push(node);
+ this.selMap[node.id] = node;
+ this.lastSelNode = node;
+ node.ui.onSelectedChange(true);
+ this.fireEvent('selectionchange', this, this.selNodes);
+ return node;
+ },
+
+ unselect : function(node){
+ if(this.selMap[node.id]){
+ node.ui.onSelectedChange(false);
+ var sn = this.selNodes;
+ var index = -1;
+ if(sn.indexOf){
+ index = sn.indexOf(node);
+ }else{
+ for(var i = 0, len = sn.length; i < len; i++){
+ if(sn[i] == node){
+ index = i;
+ break;
+ }
+ }
+ }
+ if(index != -1){
+ this.selNodes.splice(index, 1);
+ }
+ delete this.selMap[node.id];
+ this.fireEvent('selectionchange', this, this.selNodes);
+ }
+ },
+
+ clearSelections : function(suppressEvent){
+ var sn = this.selNodes;
+ if(sn.length > 0){
+ for(var i = 0, len = sn.length; i < len; i++){
+ sn[i].ui.onSelectedChange(false);
+ }
+ this.selNodes = [];
+ this.selMap = {};
+ if(suppressEvent !== true){
+ this.fireEvent('selectionchange', this, this.selNodes);
+ }
+ }
+ },
+
+ isSelected : function(node){
+ return this.selMap[node.id] ? true : false;
+ },
+
+ getSelectedNodes : function(){
+ return this.selNodes;
+ },
+
+ onKeyDown : YAHOO.ext.tree.DefaultSelectionModel.prototype.onKeyDown
+}); |