From 0b36d151572e050b51d82e7429fee847ebb33e22 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Thu, 20 Nov 2014 06:03:22 -0500
Subject: [PATCH] Add method to display operation (uploading) progress in UI message

---
 program/js/treelist.js |  245 ++++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 212 insertions(+), 33 deletions(-)

diff --git a/program/js/treelist.js b/program/js/treelist.js
index cce4d17..08e0e68 100644
--- a/program/js/treelist.js
+++ b/program/js/treelist.js
@@ -45,7 +45,10 @@
     scroll_step: 5,
     scroll_speed: 20,
     save_state: false,
-    check_droptarget: function(node){ return !node.virtual }
+    keyboard: true,
+    tabexit: true,
+    parent_focus: false,
+    check_droptarget: function(node) { return !node.virtual; }
   }, p || {});
 
   var container = $(node),
@@ -66,6 +69,9 @@
     searchfield,
     tree_state,
     ui_droppable,
+    ui_draggable,
+    draggable_opts,
+    droppable_opts,
     list_id = (container.attr('id') || p.id_prefix || '0'),
     me = this;
 
@@ -82,12 +88,15 @@
   this.drag_end = drag_end;
   this.intersects = intersects;
   this.droppable = droppable;
+  this.draggable = draggable;
   this.update = update_node;
   this.insert = insert;
   this.remove = remove;
   this.get_item = get_item;
   this.get_node = get_node;
   this.get_selection = get_selection;
+  this.is_search = is_search;
+  this.reset_search = reset_search;
 
   /////// startup code (constructor)
 
@@ -107,11 +116,25 @@
     e.stopPropagation();
   });
 
-  container.on('click', 'li', function(e){
+  container.on('click', 'li', function(e) {
+    // do not select record on checkbox/input click
+    if ($(e.target).is('input'))
+      return true;
+
     var node = p.selectable ? indexbyid[dom2id($(this))] : null;
     if (node && !node.virtual) {
       select(node.id);
       e.stopPropagation();
+    }
+  });
+
+  // mute clicks on virtual folder links (they need tabindex="0" in order to be selectable by keyboard)
+  container.on('mousedown', 'a', function(e) {
+    var link = $(e.target), node = indexbyid[dom2id(link.closest('li'))];
+    if (node && node.virtual && !link.attr('href')) {
+      e.preventDefault();
+      e.stopPropagation();
+      return false;
     }
   });
 
@@ -165,6 +188,17 @@
   $(document.body)
     .bind('keydown', keypress);
 
+  // catch focus when clicking the list container area
+  if (p.parent_focus) {
+    container.parent(':not(body)').click(function(e) {
+      if (!has_focus && selection) {
+        $(get_item(selection)).find(':focusable').first().focus();
+      }
+      else if (!has_focus) {
+        container.children('li:has(:focusable)').first().find(':focusable').first().focus();
+      }
+    });
+  }
 
   /////// private methods
 
@@ -215,15 +249,24 @@
   function select(id)
   {
     if (selection) {
-      id2dom(selection).removeClass('selected').removeAttr('aria-selected');
+      id2dom(selection, true).removeClass('selected').removeAttr('aria-selected');
+      if (search_active)
+          id2dom(selection).removeClass('selected').removeAttr('aria-selected');
       selection = null;
     }
 
-    var li = id2dom(id);
+    if (!id)
+      return;
+
+    var li = id2dom(id, true);
     if (li.length) {
       li.addClass('selected').attr('aria-selected', 'true');
       selection = id;
       // TODO: expand all parent nodes if collapsed
+
+      if (search_active)
+        id2dom(id).addClass('selected').attr('aria-selected', 'true');
+
       scroll_to_node(li);
     }
 
@@ -328,14 +371,32 @@
    */
   function update_node(id, updates, sort)
   {
-    var li, node = indexbyid[id];
+    var li, parent_ul, parent_node, old_parent,
+      node = indexbyid[id];
 
     if (node) {
       li = id2dom(id);
+      parent_ul = li.parent();
 
-      if (updates.id || updates.html || updates.children || updates.classes) {
+      if (updates.id || updates.html || updates.children || updates.classes || updates.parent) {
+        if (updates.parent && (parent_node = indexbyid[updates.parent])) {
+          // remove reference from old parent's child list
+          if (parent_ul.closest('li').length && (old_parent = indexbyid[dom2id(parent_ul.closest('li'))])) {
+            old_parent.children = $.grep(old_parent.children, function(elem, i){ return elem.id != node.id; });
+          }
+
+          // append to new parent node
+          parent_ul = id2dom(updates.parent).children('ul').first();
+          if (!parent_node.children)
+            parent_node.children = [];
+          parent_node.children.push(node);
+        }
+        else if (updates.parent !== undefined) {
+          parent_ul = container;
+        }
+
         $.extend(node, updates);
-        render_node(node, li.parent(), li);
+        li = render_node(node, parent_ul, li);
       }
 
       if (node.id != id) {
@@ -397,6 +458,10 @@
       node.deleted = true;
       delete indexbyid[id];
 
+      if (search_active) {
+        id2dom(id, false).remove();
+      }
+
       return true;
     }
 
@@ -416,7 +481,7 @@
    */
   function update_dom(node)
   {
-    var li = id2dom(node.id);
+    var li = id2dom(node.id, true);
     li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
     li.children('ul').first()[(node.collapsed ? 'hide' : 'show')]();
     li.children('div.treetoggle').removeClass('collapsed expanded').addClass(node.collapsed ? 'collapsed' : 'expanded');
@@ -426,7 +491,7 @@
   /**
    *
    */
-  function reset()
+  function reset(keep_content)
   {
     select('');
 
@@ -434,7 +499,24 @@
     indexbyid = {};
     drag_active = false;
 
-    container.html('');
+    if (keep_content) {
+      if (draggable_opts) {
+        if (ui_draggable)
+          draggable('destroy');
+        draggable(draggable_opts);
+      }
+
+      if (droppable_opts) {
+        if (ui_droppable)
+          droppable('destroy');
+        droppable(droppable_opts);
+      }
+
+      update_data();
+    }
+    else {
+      container.html('');
+    }
 
     reset_search();
   }
@@ -457,11 +539,17 @@
         var li, sli;
         if (!node.virtual && !node.deleted && String(node.text).toLowerCase().indexOf(q) >= 0 && hits.indexOf(node.id) < 0) {
           li = id2dom(node.id);
+
+          // skip already filtered nodes
+          if (li.data('filtered'))
+            return;
+
           sli = $('<li>')
             .attr('id', li.attr('id') + '--xsR')
             .attr('class', li.attr('class'))
             .addClass('searchresult__')
-            .append(li.children().first().clone(true, true))
+            // append all elements like links and inputs, but not sub-trees
+            .append(li.children(':not(div.treetoggle,ul)').clone(true, true))
             .appendTo(container);
             hits.push(node.id);
         }
@@ -500,7 +588,7 @@
       searchfield.val('');
 
     $(container).children('li.searchresult__').remove();
-    $(container).children('li').show();
+    $(container).children('li').filter(function() { return !$(this).data('filtered'); }).show();
 
     search_active = false;
 
@@ -509,6 +597,14 @@
 
     if (selection)
       select(selection);
+  }
+
+  /**
+   *
+   */
+  function is_search()
+  {
+    return search_active;
   }
 
   /**
@@ -545,8 +641,11 @@
       .addClass((node.classes || []).join(' '))
       .data('id', node.id);
 
-    if (replace)
+    if (replace) {
       replace.replaceWith(li);
+      if (parent)
+        li.appendTo(parent);
+    }
     else
       li.appendTo(parent);
 
@@ -603,7 +702,8 @@
         node.childlistclass = sublist.attr('class');
       }
       if (node.children.length) {
-        node.collapsed = sublist.css('display') == 'none';
+        if (node.collapsed === undefined)
+          node.collapsed = sublist.css('display') == 'none';
 
         // apply saved state
         state = get_state(node.id, node.collapsed);
@@ -659,7 +759,7 @@
    */
   function dom2id(li)
   {
-    var domid = li.attr('id').replace(new RegExp('^' + (p.id_prefix) || '%'), '').replace(/--xsR$/, '');
+    var domid = String(li.attr('id')).replace(new RegExp('^' + (p.id_prefix) || '%'), '').replace(/--xsR$/, '');
     return p.id_decode ? p.id_decode(domid) : domid;
   }
 
@@ -670,6 +770,7 @@
   {
     var domid = p.id_encode ? p.id_encode(id) : id,
       suffix = search_active && !real ? '--xsR' : '';
+
     return $('#' + p.id_prefix + domid + suffix, container);
   }
 
@@ -727,7 +828,7 @@
     var target = e.target || {},
       keyCode = rcube_event.get_keycode(e);
 
-    if (!has_focus || target.nodeName == 'INPUT' || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
+    if (!has_focus || target.nodeName == 'INPUT' && keyCode != 38 && keyCode != 40 || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')
       return true;
 
     switch (keyCode) {
@@ -735,11 +836,11 @@
       case 40:
       case 63232: // 'up', in safari keypress
       case 63233: // 'down', in safari keypress
-        var li = container.find(':focus').closest('li');
+        var li = p.keyboard ? container.find(':focus').closest('li') : [];
         if (li.length) {
           focus_next(li, (mod = keyCode == 38 || keyCode == 63232 ? -1 : 1));
         }
-        break;
+        return rcube_event.cancel(e);
 
       case 37: // Left arrow key
       case 39: // Right arrow key
@@ -753,9 +854,11 @@
         return false;
 
       case 9:  // Tab
-        // jump to last/first item to move focus away from the treelist widget by tab
-        var limit = rcube_event.get_modifier(e) == SHIFT_KEY ? 'first' : 'last';
-        container.find('li[role=treeitem]:has(a)')[limit]().find('a:'+limit).focus();
+        if (p.keyboard && p.tabexit) {
+          // jump to last/first item to move focus away from the treelist widget by tab
+          var limit = rcube_event.get_modifier(e) == SHIFT_KEY ? 'first' : 'last';
+          focus_noscroll(container.find('li[role=treeitem]:has(a)')[limit]().find('a:'+limit));
+        }
         break;
     }
 
@@ -768,23 +871,36 @@
       next = li[mod](), limit, parent;
 
     if (dir > 0 && !from_child && li.children('ul[role=group]:visible').length) {
-      li.children('ul').children('li:first').children('a:first').focus();
+      li.children('ul').children('li:first').find('a:first').focus();
     }
     else if (dir < 0 && !from_child && next.children('ul[role=group]:visible').length) {
-      next.children('ul').children('li:last').children('a:last').focus();
+      next.children('ul').children('li:last').find('a:first').focus();
     }
-    else if (next.length && next.children('a:first')) {
-      next.children('a:first').focus();
+    else if (next.length && next.find('a:first').focus().length) {
+        // focused
     }
     else {
       parent = li.parent().closest('li[role=treeitem]');
       if (parent.length)
         if (dir < 0) {
-          parent.children('a:first').focus();
+          parent.find('a:first').focus();
         }
         else {
           focus_next(parent, dir, true);
         }
+    }
+  }
+
+  /**
+   * Focus the given element without scrolling the list container
+   */
+  function focus_noscroll(elem)
+  {
+    if (elem.length) {
+      var frame = container.parent().get(0) || { scrollTop:0 },
+        y = frame.scrollTop || frame.scrollY;
+      elem.focus();
+      frame.scrollTop = y;
     }
   }
 
@@ -795,8 +911,13 @@
    * When dragging starts, compute absolute bounding boxes of the list and it's items
    * for faster comparisons while mouse is moving
    */
-  function drag_start()
+  function drag_start(force)
   {
+    if (!force && drag_active)
+      return;
+
+    drag_active = true;
+
     var li, item, height,
       pos = container.offset();
 
@@ -804,7 +925,6 @@
     list_scroll_top = container.parent().scrollTop();
     pos.top += list_scroll_top;
 
-    drag_active = true;
     box_coords = {
       x1: pos.left,
       y1: pos.top,
@@ -867,6 +987,9 @@
    */
   function drag_end()
   {
+    if (!drag_active)
+      return;
+
     drag_active = false;
     scroll_timer = null;
 
@@ -897,7 +1020,7 @@
   }
 
   /**
-   * Determine if the given mouse coords intersect the list and one if its items
+   * Determine if the given mouse coords intersect the list and one of its items
    */
   function intersects(mouse, highlight)
   {
@@ -917,8 +1040,8 @@
     }
 
     // check intersection with visible list items
-    var pos, node;
-    for (var id in item_coords) {
+    var id, pos, node;
+    for (id in item_coords) {
       pos = item_coords[id];
       if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.top >= pos.y1 && mouse.top < pos.y2) {
         node = indexbyid[id];
@@ -931,7 +1054,7 @@
           autoexpand_item = id;
           autoexpand_timer = setTimeout(function() {
             expand(autoexpand_item);
-            drag_start();  // re-calculate item coords
+            drag_start(true);  // re-calculate item coords
             autoexpand_item = null;
             if (ui_droppable)
               $.ui.ddmanager.prepareOffsets($.ui.ddmanager.current, null);
@@ -971,7 +1094,24 @@
    */
   function droppable(opts)
   {
-    var my_opts = $.extend({ greedy: true, hoverClass: 'droptarget', addClasses:false }, opts);
+    if (!opts) opts = {};
+
+    if ($.type(opts) == 'string') {
+      if (opts == 'destroy') {
+        ui_droppable = null;
+      }
+      $('li:not(.virtual)', container).droppable(opts);
+      return this;
+    }
+
+    droppable_opts = opts;
+
+    var my_opts = $.extend({
+        greedy: true,
+        tolerance: 'pointer',
+        hoverClass: 'droptarget',
+        addClasses: false
+      }, opts);
 
     my_opts.activate = function(e, ui) {
       drag_start();
@@ -994,6 +1134,45 @@
     };
 
     $('li:not(.virtual)', container).droppable(my_opts);
+
+    return this;
+  }
+
+  /**
+   * Wrapper for jQuery.UI.draggable() activation on this widget
+   *
+   * @param object Options as passed to regular .draggable() function
+   */
+  function draggable(opts)
+  {
+    if (!opts) opts = {};
+
+    if ($.type(opts) == 'string') {
+      if (opts == 'destroy') {
+        ui_draggable = null;
+      }
+      $('li:not(.virtual)', container).draggable(opts);
+      return this;
+    }
+
+    draggable_opts = opts;
+
+    var my_opts = $.extend({
+        appendTo: 'body',
+        revert: 'invalid',
+        iframeFix: true,
+        addClasses: false,
+        cursorAt: {left: -20, top: 5},
+        create: function(e, ui) { ui_draggable = ui; },
+        helper: function(e) {
+          return $('<div>').attr('id', 'rcmdraglayer')
+            .text($.trim($(e.target).first().text()));
+        }
+      }, opts);
+
+    $('li:not(.virtual)', container).draggable(my_opts);
+
+    return this;
   }
 }
 

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