SoundSoftware Code Site

/* redMine - project management software

   Copyright (C) 2006-2008  Jean-Philippe Lang */

var observingContextMenuClick;

ContextMenu = Class.create();

ContextMenu.prototype = {

	initialize: function (url) {

	this.url = url;

	this.createMenu();

	if (!observingContextMenuClick) {

		Event.observe(document, 'click', this.Click.bindAsEventListener(this));

		Event.observe(document, 'contextmenu', this.RightClick.bindAsEventListener(this));

		observingContextMenuClick = true;

	}

	this.unselectAll();

	this.lastSelected = null;

	},

	RightClick: function(e) {

		this.hideMenu();

		// do not show the context menu on links

		if (Event.element(e).tagName == 'A') { return; }

		var tr = Event.findElement(e, 'tr');

		if (tr == document || tr == undefined  || !tr.hasClassName('hascontextmenu')) { return; }

		Event.stop(e);

		if (!this.isSelected(tr)) {

			this.unselectAll();

			this.addSelection(tr);

			this.lastSelected = tr;

		}

		this.showMenu(e);

	},

  Click: function(e) {

  	this.hideMenu();

  	if (Event.element(e).tagName == 'A' || Event.element(e).tagName == 'IMG') { return; }

    if (Event.isLeftClick(e) || (navigator.appVersion.match(/\bMSIE\b/))) {      

      var tr = Event.findElement(e, 'tr');

      if (tr!=null && tr!=document && tr.hasClassName('hascontextmenu')) {

        // a row was clicked, check if the click was on checkbox

        var box = Event.findElement(e, 'input');

        if (box!=document && box!=undefined) {

          // a checkbox may be clicked

          if (box.checked) {

            tr.addClassName('context-menu-selection');

          } else {

            tr.removeClassName('context-menu-selection');

          }

        } else {

          if (e.ctrlKey || e.metaKey) {

            this.toggleSelection(tr);

          } else if (e.shiftKey) {

            if (this.lastSelected != null) {

              var toggling = false;

              var rows = $$('.hascontextmenu');

              for (i=0; i<rows.length; i++) {

                if (toggling || rows[i]==tr) {

                  this.addSelection(rows[i]);

                }

                if (rows[i]==tr || rows[i]==this.lastSelected) {

                  toggling = !toggling;

                }

              }

            } else {

              this.addSelection(tr);

            }

          } else {

            this.unselectAll();

            this.addSelection(tr);

          }

          this.lastSelected = tr;

        }

      } else {

        // click is outside the rows

        var t = Event.findElement(e, 'a');

        if (t == document || t == undefined) {

          this.unselectAll();

        } else {

          if (Element.hasClassName(t, 'disabled') || Element.hasClassName(t, 'submenu')) {

            Event.stop(e);

          }

        }

      }

    }

  },

  createMenu: function() {

    if (!$('context-menu')) {

      var menu = document.createElement("div");

      menu.setAttribute("id", "context-menu");

      menu.setAttribute("style", "display:none;");

      document.getElementById("content").appendChild(menu);

    }

  },

  showMenu: function(e) {

    var mouse_x = Event.pointerX(e);

    var mouse_y = Event.pointerY(e);

    var render_x = mouse_x;

    var render_y = mouse_y;

    var dims;

    var menu_width;

    var menu_height;

    var window_width;

    var window_height;

    var max_width;

    var max_height;

    $('context-menu').style['left'] = (render_x + 'px');

    $('context-menu').style['top'] = (render_y + 'px');		

    Element.update('context-menu', '');

    new Ajax.Updater({success:'context-menu'}, this.url, 

      {asynchronous:true,

       method: 'get',

       evalScripts:true,

       parameters:Form.serialize(Event.findElement(e, 'form')),

       onComplete:function(request){

				 dims = $('context-menu').getDimensions();

				 menu_width = dims.width;

				 menu_height = dims.height;

				 max_width = mouse_x + 2*menu_width;

				 max_height = mouse_y + menu_height;

				 var ws = window_size();

				 window_width = ws.width;

				 window_height = ws.height;

				 /* display the menu above and/or to the left of the click if needed */

				 if (max_width > window_width) {

				   render_x -= menu_width;

				   $('context-menu').addClassName('reverse-x');

				 } else {

					 $('context-menu').removeClassName('reverse-x');

				 }

				 if (max_height > window_height) {

				   render_y -= menu_height;

				   $('context-menu').addClassName('reverse-y');

				 } else {

					 $('context-menu').removeClassName('reverse-y');

				 }

				 if (render_x <= 0) render_x = 1;

				 if (render_y <= 0) render_y = 1;

				 $('context-menu').style['left'] = (render_x + 'px');

				 $('context-menu').style['top'] = (render_y + 'px');

         Effect.Appear('context-menu', {duration: 0.20});

         if (window.parseStylesheets) { window.parseStylesheets(); } // IE

      }})

  },

  hideMenu: function() {

    Element.hide('context-menu');

  },

  addSelection: function(tr) {

    tr.addClassName('context-menu-selection');

    this.checkSelectionBox(tr, true);

    this.clearDocumentSelection();

  },

  toggleSelection: function(tr) {

    if (this.isSelected(tr)) {

      this.removeSelection(tr);

    } else {

      this.addSelection(tr);

    }

  },

  removeSelection: function(tr) {

    tr.removeClassName('context-menu-selection');

    this.checkSelectionBox(tr, false);

  },

  unselectAll: function() {

    var rows = $$('.hascontextmenu');

    for (i=0; i<rows.length; i++) {

      this.removeSelection(rows[i]);

    }

  },

  checkSelectionBox: function(tr, checked) {

  	var inputs = Element.getElementsBySelector(tr, 'input');

  	if (inputs.length > 0) { inputs[0].checked = checked; }

  },

  isSelected: function(tr) {

    return Element.hasClassName(tr, 'context-menu-selection');

  },

  clearDocumentSelection: function() {

    if (document.selection) {

      document.selection.clear(); // IE

    } else {

      window.getSelection().removeAllRanges();

    }

  }

}

function toggleIssuesSelection(el) {

	var boxes = el.getElementsBySelector('input[type=checkbox]');

	var all_checked = true;

	for (i = 0; i < boxes.length; i++) { if (boxes[i].checked == false) { all_checked = false; } }

	for (i = 0; i < boxes.length; i++) {

		if (all_checked) {

			boxes[i].checked = false;

			boxes[i].up('tr').removeClassName('context-menu-selection');

		} else if (boxes[i].checked == false) {

			boxes[i].checked = true;

			boxes[i].up('tr').addClassName('context-menu-selection');

		}

	}

}

function window_size() {

    var w;

    var h;

    if (window.innerWidth) {

	w = window.innerWidth;

	h = window.innerHeight;

    } else if (document.documentElement) {

	w = document.documentElement.clientWidth;

	h = document.documentElement.clientHeight;

    } else {

	w = document.body.clientWidth;

	h = document.body.clientHeight;

    }

    return {width: w, height: h};

}