Chris@909: /* redMine - project management software
Chris@909:    Copyright (C) 2006-2008  Jean-Philippe Lang */
Chris@909: 
Chris@909: var observingContextMenuClick;
Chris@909: 
Chris@909: ContextMenu = Class.create();
Chris@909: ContextMenu.prototype = {
Chris@909: 	initialize: function (url) {
Chris@909: 	this.url = url;
Chris@909: 	this.createMenu();
Chris@909: 
Chris@909: 	if (!observingContextMenuClick) {
Chris@909: 		Event.observe(document, 'click', this.Click.bindAsEventListener(this));
Chris@909: 		Event.observe(document, 'contextmenu', this.RightClick.bindAsEventListener(this));
Chris@909: 		observingContextMenuClick = true;
Chris@909: 	}
Chris@909: 	
Chris@909: 	this.unselectAll();
Chris@909: 	this.lastSelected = null;
Chris@909: 	},
Chris@909:   
Chris@909: 	RightClick: function(e) {
Chris@909: 		this.hideMenu();
Chris@909: 		// do not show the context menu on links
Chris@909: 		if (Event.element(e).tagName == 'A') { return; }
Chris@909: 		var tr = Event.findElement(e, 'tr');
Chris@909: 		if (tr == document || tr == undefined  || !tr.hasClassName('hascontextmenu')) { return; }
Chris@909: 		Event.stop(e);
Chris@909: 		if (!this.isSelected(tr)) {
Chris@909: 			this.unselectAll();
Chris@909: 			this.addSelection(tr);
Chris@909: 			this.lastSelected = tr;
Chris@909: 		}
Chris@909: 		this.showMenu(e);
Chris@909: 	},
Chris@909: 
Chris@909:   Click: function(e) {
Chris@909:   	this.hideMenu();
Chris@909:   	if (Event.element(e).tagName == 'A' || Event.element(e).tagName == 'IMG') { return; }
Chris@909:     if (Event.isLeftClick(e) || (navigator.appVersion.match(/\bMSIE\b/))) {      
Chris@909:       var tr = Event.findElement(e, 'tr');
Chris@909:       if (tr!=null && tr!=document && tr.hasClassName('hascontextmenu')) {
Chris@909:         // a row was clicked, check if the click was on checkbox
Chris@909:         var box = Event.findElement(e, 'input');
Chris@909:         if (box!=document && box!=undefined) {
Chris@909:           // a checkbox may be clicked
Chris@909:           if (box.checked) {
Chris@909:             tr.addClassName('context-menu-selection');
Chris@909:           } else {
Chris@909:             tr.removeClassName('context-menu-selection');
Chris@909:           }
Chris@909:         } else {
Chris@909:           if (e.ctrlKey || e.metaKey) {
Chris@909:             this.toggleSelection(tr);
Chris@909:           } else if (e.shiftKey) {
Chris@909:             if (this.lastSelected != null) {
Chris@909:               var toggling = false;
Chris@909:               var rows = $$('.hascontextmenu');
Chris@909:               for (i=0; i<rows.length; i++) {
Chris@909:                 if (toggling || rows[i]==tr) {
Chris@909:                   this.addSelection(rows[i]);
Chris@909:                 }
Chris@909:                 if (rows[i]==tr || rows[i]==this.lastSelected) {
Chris@909:                   toggling = !toggling;
Chris@909:                 }
Chris@909:               }
Chris@909:             } else {
Chris@909:               this.addSelection(tr);
Chris@909:             }
Chris@909:           } else {
Chris@909:             this.unselectAll();
Chris@909:             this.addSelection(tr);
Chris@909:           }
Chris@909:           this.lastSelected = tr;
Chris@909:         }
Chris@909:       } else {
Chris@909:         // click is outside the rows
Chris@909:         var t = Event.findElement(e, 'a');
Chris@909:         if (t == document || t == undefined) {
Chris@909:           this.unselectAll();
Chris@909:         } else {
Chris@909:           if (Element.hasClassName(t, 'disabled') || Element.hasClassName(t, 'submenu')) {
Chris@909:             Event.stop(e);
Chris@909:           }
Chris@909:         }
Chris@909:       }
Chris@909:     }
Chris@909:   },
Chris@909:   
Chris@909:   createMenu: function() {
Chris@909:     if (!$('context-menu')) {
Chris@909:       var menu = document.createElement("div");
Chris@909:       menu.setAttribute("id", "context-menu");
Chris@909:       menu.setAttribute("style", "display:none;");
Chris@909:       document.getElementById("content").appendChild(menu);
Chris@909:     }
Chris@909:   },
Chris@909:   
Chris@909:   showMenu: function(e) {
Chris@909:     var mouse_x = Event.pointerX(e);
Chris@909:     var mouse_y = Event.pointerY(e);
Chris@909:     var render_x = mouse_x;
Chris@909:     var render_y = mouse_y;
Chris@909:     var dims;
Chris@909:     var menu_width;
Chris@909:     var menu_height;
Chris@909:     var window_width;
Chris@909:     var window_height;
Chris@909:     var max_width;
Chris@909:     var max_height;
Chris@909: 
Chris@909:     $('context-menu').style['left'] = (render_x + 'px');
Chris@909:     $('context-menu').style['top'] = (render_y + 'px');		
Chris@909:     Element.update('context-menu', '');
Chris@909: 
Chris@909:     new Ajax.Updater({success:'context-menu'}, this.url, 
Chris@909:       {asynchronous:true,
Chris@909:        method: 'get',
Chris@909:        evalScripts:true,
Chris@909:        parameters:Form.serialize(Event.findElement(e, 'form')),
Chris@909:        onComplete:function(request){
Chris@909: 				 dims = $('context-menu').getDimensions();
Chris@909: 				 menu_width = dims.width;
Chris@909: 				 menu_height = dims.height;
Chris@909: 				 max_width = mouse_x + 2*menu_width;
Chris@909: 				 max_height = mouse_y + menu_height;
Chris@909: 			
Chris@909: 				 var ws = window_size();
Chris@909: 				 window_width = ws.width;
Chris@909: 				 window_height = ws.height;
Chris@909: 			
Chris@909: 				 /* display the menu above and/or to the left of the click if needed */
Chris@909: 				 if (max_width > window_width) {
Chris@909: 				   render_x -= menu_width;
Chris@909: 				   $('context-menu').addClassName('reverse-x');
Chris@909: 				 } else {
Chris@909: 					 $('context-menu').removeClassName('reverse-x');
Chris@909: 				 }
Chris@909: 				 if (max_height > window_height) {
Chris@909: 				   render_y -= menu_height;
Chris@909: 				   $('context-menu').addClassName('reverse-y');
Chris@909: 				 } else {
Chris@909: 					 $('context-menu').removeClassName('reverse-y');
Chris@909: 				 }
Chris@909: 				 if (render_x <= 0) render_x = 1;
Chris@909: 				 if (render_y <= 0) render_y = 1;
Chris@909: 				 $('context-menu').style['left'] = (render_x + 'px');
Chris@909: 				 $('context-menu').style['top'] = (render_y + 'px');
Chris@909: 				 
Chris@909:          Effect.Appear('context-menu', {duration: 0.20});
Chris@909:          if (window.parseStylesheets) { window.parseStylesheets(); } // IE
Chris@909:       }})
Chris@909:   },
Chris@909:   
Chris@909:   hideMenu: function() {
Chris@909:     Element.hide('context-menu');
Chris@909:   },
Chris@909:   
Chris@909:   addSelection: function(tr) {
Chris@909:     tr.addClassName('context-menu-selection');
Chris@909:     this.checkSelectionBox(tr, true);
Chris@909:     this.clearDocumentSelection();
Chris@909:   },
Chris@909:   
Chris@909:   toggleSelection: function(tr) {
Chris@909:     if (this.isSelected(tr)) {
Chris@909:       this.removeSelection(tr);
Chris@909:     } else {
Chris@909:       this.addSelection(tr);
Chris@909:     }
Chris@909:   },
Chris@909:   
Chris@909:   removeSelection: function(tr) {
Chris@909:     tr.removeClassName('context-menu-selection');
Chris@909:     this.checkSelectionBox(tr, false);
Chris@909:   },
Chris@909:   
Chris@909:   unselectAll: function() {
Chris@909:     var rows = $$('.hascontextmenu');
Chris@909:     for (i=0; i<rows.length; i++) {
Chris@909:       this.removeSelection(rows[i]);
Chris@909:     }
Chris@909:   },
Chris@909:   
Chris@909:   checkSelectionBox: function(tr, checked) {
Chris@909:   	var inputs = Element.getElementsBySelector(tr, 'input');
Chris@909:   	if (inputs.length > 0) { inputs[0].checked = checked; }
Chris@909:   },
Chris@909:   
Chris@909:   isSelected: function(tr) {
Chris@909:     return Element.hasClassName(tr, 'context-menu-selection');
Chris@909:   },
Chris@909:   
Chris@909:   clearDocumentSelection: function() {
Chris@909:     if (document.selection) {
Chris@909:       document.selection.clear(); // IE
Chris@909:     } else {
Chris@909:       window.getSelection().removeAllRanges();
Chris@909:     }
Chris@909:   }
Chris@909: }
Chris@909: 
Chris@909: function toggleIssuesSelection(el) {
Chris@909: 	var boxes = el.getElementsBySelector('input[type=checkbox]');
Chris@909: 	var all_checked = true;
Chris@909: 	for (i = 0; i < boxes.length; i++) { if (boxes[i].checked == false) { all_checked = false; } }
Chris@909: 	for (i = 0; i < boxes.length; i++) {
Chris@909: 		if (all_checked) {
Chris@909: 			boxes[i].checked = false;
Chris@909: 			boxes[i].up('tr').removeClassName('context-menu-selection');
Chris@909: 		} else if (boxes[i].checked == false) {
Chris@909: 			boxes[i].checked = true;
Chris@909: 			boxes[i].up('tr').addClassName('context-menu-selection');
Chris@909: 		}
Chris@909: 	}
Chris@909: }
Chris@909: 
Chris@909: function window_size() {
Chris@909:     var w;
Chris@909:     var h;
Chris@909:     if (window.innerWidth) {
Chris@909: 	w = window.innerWidth;
Chris@909: 	h = window.innerHeight;
Chris@909:     } else if (document.documentElement) {
Chris@909: 	w = document.documentElement.clientWidth;
Chris@909: 	h = document.documentElement.clientHeight;
Chris@909:     } else {
Chris@909: 	w = document.body.clientWidth;
Chris@909: 	h = document.body.clientHeight;
Chris@909:     }
Chris@909:     return {width: w, height: h};
Chris@909: }