Redmine

/* redMine - project management software

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

var observingContextMenuClick;

ContextMenu = Class.create();

ContextMenu.prototype = {

        initialize: function (url) {

        this.url = url;

        // prevent selection when using Ctrl/Shit key

        var tables = $$('table.issues');

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

                tables[i].onselectstart = function () { return false; } // ie

                tables[i].onmousedown = function () { return false; } // mozilla

        }

        if (!observingContextMenuClick) {

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

                Event.observe(document, (window.opera ? 'click' : '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.findElement(e, 'a') != document) { return; }

                // right-click simulated by Alt+Click with Opera

                if (window.opera && !e.altKey) { return; }

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

                if ((tr == document) || !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.findElement(e, 'a') != document) { return; }

    if (window.opera && e.altKey) {        return; }

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

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

      if (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) {

          // a checkbox may be clicked

          if (box.checked) {

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

          } else {

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

          }

        } else {

          if (e.ctrlKey) {

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

          Event.stop(e);

        }

      }

    }

  },

  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,

       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;

         if (max_width > window_width) {

           render_x -= menu_width;

         }

         if (max_height > window_height) {

           render_y -= menu_height;

         }

         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');                

// this code can be used for debugging

//         alert("menu_width=" + menu_width + "\nmenu_height=" + menu_height + "\nmouse_x=" + mouse_x + "\nmouse_y=" + mouse_y +

//         "\nwindow_width=" + window_width + "\nwindow_height=" + window_height + "\nrender_x=" + render_x + "\nrender_y=" + render_y);

         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);

  },

  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');

  }

}

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};

}