From b62c4869f7c43804601b7786809e7e7a2508566d Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Sun, 2 May 2010 15:09:36 +0000
Subject: - Allow columns order change per user - drag&drop (#1485795)

---
 CHANGELOG                   |   1 +
 program/js/app.js           |  54 +++++++--
 program/js/list.js          | 269 ++++++++++++++++++++++++++++++++++++++++----
 program/steps/mail/func.inc |  23 ++--
 program/steps/mail/list.inc |   2 +-
 5 files changed, 311 insertions(+), 38 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 4cfaec099..d53a77bba 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,7 @@
 CHANGELOG RoundCube Webmail
 ===========================
 
+- Allow columns order change per user - drag&drop (#1485795)
 - Add References header in read receipt (#1486681)
 - Fix database constraint violation when opening a message (#1486696)
 - Add 'loading' message while login is in progress (#1486667)
diff --git a/program/js/app.js b/program/js/app.js
index b2888d028..dd3feeeca 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -166,7 +166,8 @@ function rcube_webmail()
         if (this.gui_objects.messagelist) {
 
           this.message_list = new rcube_list_widget(this.gui_objects.messagelist,
-            {multiselect:true, multiexpand:true, draggable:true, keyboard:true, dblclick_time:this.dblclick_time});
+            {multiselect:true, multiexpand:true, draggable:true, keyboard:true,
+            column_movable:this.env.col_movable, column_fixed:0, dblclick_time:this.dblclick_time});
           this.message_list.row_init = function(o){ p.init_message_row(o); };
           this.message_list.addEventListener('dblclick', function(o){ p.msglist_dbl_click(o); });
           this.message_list.addEventListener('click', function(o){ p.msglist_click(o); });
@@ -176,11 +177,11 @@ function rcube_webmail()
           this.message_list.addEventListener('dragmove', function(e){ p.drag_move(e); });
           this.message_list.addEventListener('dragend', function(e){ p.drag_end(e); });
           this.message_list.addEventListener('expandcollapse', function(e){ p.msglist_expand(e); });
+          this.message_list.addEventListener('column_replace', function(e){ p.msglist_set_coltypes(e); });
 
           document.onmouseup = function(e){ return p.doc_mouse_up(e); };
           this.gui_objects.messagelist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
 
-          this.set_message_coltypes(this.env.coltypes);
           this.message_list.init();
           this.enable_command('toggle_status', 'toggle_flag', 'menu-open', 'menu-save', true);
 
@@ -1487,6 +1488,24 @@ function rcube_webmail()
     if (this.env.messages[row.uid])
       this.env.messages[row.uid].expanded = row.expanded;
   };
+  
+  this.msglist_set_coltypes = function(list)
+  {
+    var i, found, name, cols = list.list.tHead.rows[0].cells;
+    
+    this.env.coltypes = [];
+    
+    for (i=0; i<cols.length; i++)
+      if (cols[i].id && cols[i].id.match(/^rcm/)) {
+        name = cols[i].id.replace(/^rcm/, '');
+        this.env.coltypes[this.env.coltypes.length] = name == 'to' ? 'from' : name;
+      }
+
+    if ((found = $.inArray('flag', this.env.coltypes)) >= 0)
+      this.set_env('flagged_col', found);
+
+    this.http_post('save-pref', { '_name':'list_cols', '_value':this.env.coltypes });
+  };
 
   this.check_droptarget = function(id)
   {
@@ -1692,6 +1711,9 @@ function rcube_webmail()
   {
     var update, add_url = '';
 
+    if (!sort_col) sort_col = this.env.sort_col;
+    if (!sort_order) sort_order = this.env.sort_order;
+
     if (this.env.sort_col != sort_col || this.env.sort_order != sort_order) {
       update = 1;
       this.set_list_sorting(sort_col, sort_order);
@@ -1702,9 +1724,25 @@ function rcube_webmail()
       add_url += '&_threads=' + threads;     
     }
 
-    if (cols.join() != this.env.coltypes.join()) {
-      update = 1;
-      add_url += '&_cols=' + cols.join(',');
+    if (cols && cols.length) {
+      // make sure new columns are added at the end of the list
+      var i, idx, name, newcols = [], oldcols = this.env.coltypes;
+      for (i=0; i<oldcols.length; i++) {
+        name = oldcols[i] == 'to' ? 'from' : oldcols[i];
+        idx = $.inArray(name, cols);
+        if (idx != -1) {
+          newcols[newcols.length] = name;
+          delete cols[idx];
+        }
+      }
+      for (i=0; i<cols.length; i++)
+        if (cols[i])
+          newcols[newcols.length] = cols[i];
+      
+      if (newcols.join() != this.env.coltypes.join()) {
+        update = 1;
+        add_url += '&_cols=' + newcols.join(',');
+      }
     }
 
     if (update)
@@ -4439,13 +4477,15 @@ function rcube_webmail()
     this.env.flagged_col = null;
 
     var found;
-    if((found = $.inArray('subject', this.env.coltypes)) >= 0) {
+    if ((found = $.inArray('subject', this.env.coltypes)) >= 0) {
       this.set_env('subject_col', found);
       if (this.message_list)
         this.message_list.subject_col = found+1;
     }
-    if((found = $.inArray('flag', this.env.coltypes)) >= 0)
+    if ((found = $.inArray('flag', this.env.coltypes)) >= 0)
       this.set_env('flagged_col', found);
+
+    this.message_list.init_header();
   };
 
   // replace content of row count display
diff --git a/program/js/list.js b/program/js/list.js
index 8d6d9f1e6..9493121d5 100644
--- a/program/js/list.js
+++ b/program/js/list.js
@@ -33,6 +33,7 @@ function rcube_list_widget(list, p)
   this.rows = [];
   this.selection = [];
   this.rowcount = 0;
+  this.colcount = 0;
 
   this.subject_col = -1;
   this.shiftkey = false;
@@ -40,11 +41,14 @@ function rcube_list_widget(list, p)
   this.multiexpand = false;
   this.multi_selecting = false;
   this.draggable = false;
+  this.column_movable = false;
   this.keyboard = false;
   this.toggleselect = false;
 
   this.dont_select = false;
   this.drag_active = false;
+  this.col_drag_active = false;
+  this.column_fixed = null;
   this.last_selected = 0;
   this.shift_start = 0;
   this.in_selection_before = false;
@@ -72,18 +76,15 @@ init: function()
     this.rows = [];
     this.rowcount = 0;
 
-    var row;
-    for(var r=0; r<this.list.tBodies[0].childNodes.length; r++) {
-      row = this.list.tBodies[0].childNodes[r];
-      while (row && row.nodeType != 1) {
-        row = row.nextSibling;
-        r++;
-      }
+    var row, r;
 
+    for (r=0; r<this.list.tBodies[0].rows.length; r++) {
+      row = this.list.tBodies[0].rows[r];
       this.init_row(row);
       this.rowcount++;
     }
 
+    this.init_header();
     this.frame = this.list.parentNode;
 
     // set body events
@@ -119,6 +120,29 @@ init_row: function(row)
 },
 
 
+/**
+ * Init list column headers and set mouse events on them
+ */
+init_header: function()
+{
+  if (this.list && this.list.tHead) {
+    this.colcount = 0;
+
+    var col, r, p = this;
+    // add events for list columns moving
+    if (this.column_movable && this.list.tHead && this.list.tHead.rows) {
+      for (r=0; r<this.list.tHead.rows[0].cells.length; r++) {
+        if (this.column_fixed == r)
+          continue;
+        col = this.list.tHead.rows[0].cells[r];
+        col.onmousedown = function(e){ return p.drag_column(e, this); };
+        this.colcount++;
+      }
+    }
+  }
+},
+
+
 /**
  * Remove all list rows
  */
@@ -206,6 +230,34 @@ blur: function()
 },
 
 
+/**
+ * onmousedown-handler of message list column
+ */
+drag_column: function(e, col)
+{
+  if (this.colcount > 1) {
+    this.drag_start = true;
+    this.drag_mouse_start = rcube_event.get_mouse_pos(e);
+
+    rcube_event.add_listener({event:'mousemove', object:this, method:'column_drag_mouse_move'});
+    rcube_event.add_listener({event:'mouseup', object:this, method:'column_drag_mouse_up'});
+
+    // enable dragging over iframes
+    this.add_dragfix();
+
+    // find selected column number
+    for (var i=0; i<this.list.tHead.rows[0].cells.length; i++) {
+      if (col == this.list.tHead.rows[0].cells[i]) {
+        this.selected_column = i;
+        break;
+      }
+    }
+  }
+
+  return false;
+},
+
+
 /**
  * onmousedown-handler of message list row
  */
@@ -236,15 +288,7 @@ drag_row: function(e, id)
     rcube_event.add_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
 
     // enable dragging over iframes
-    $('iframe').each(function() {
-      $('<div class="iframe-dragdrop-fix"></div>')
-        .css({background: '#fff',
-          width: this.offsetWidth+'px', height: this.offsetHeight+'px',
-          position: 'absolute', opacity: '0.001', zIndex: 1000
-        })
-        .css($(this).offset())
-        .appendTo('body');
-    });                                                                
+    this.add_dragfix();
   }
 
   return false;
@@ -287,7 +331,7 @@ click_row: function(e, id)
 
   if (!this.drag_active) {
     // remove temp divs
-    $('div.iframe-dragdrop-fix').each(function() { this.parentNode.removeChild(this); });
+    this.del_dragfix();
     rcube_event.cancel(e);
   }
 
@@ -931,7 +975,11 @@ key_down: function(e)
   switch (rcube_event.get_keycode(e)) {
     case 27:
       if (this.drag_active)
-	return this.drag_mouse_up(e);
+	    return this.drag_mouse_up(e);
+      if (this.col_drag_active) {
+        this.selected_column = null;
+	    return this.column_drag_mouse_up(e);
+      }
 
     case 40:
     case 38: 
@@ -1040,7 +1088,9 @@ drag_mouse_move: function(e)
       return false;
 
     if (!this.draglayer)
-      this.draglayer = $('<div>').attr('id', 'rcmdraglayer').css({ position:'absolute', display:'none', 'z-index':2000 }).appendTo(document.body);
+      this.draglayer = $('<div>').attr('id', 'rcmdraglayer')
+        .css({ position:'absolute', display:'none', 'z-index':2000 })
+        .appendTo(document.body);
 
     // also select childs of (collapsed) threads for dragging
     var selection = $.merge([], this.selection);
@@ -1134,7 +1184,7 @@ drag_mouse_up: function(e)
   rcube_event.remove_listener({event:'mouseup', object:this, method:'drag_mouse_up'});
 
   // remove temp divs
-  $('div.iframe-dragdrop-fix').each(function() { this.parentNode.removeChild(this); });
+  this.del_dragfix();
 
   this.triggerEvent('dragend');
 
@@ -1142,6 +1192,185 @@ drag_mouse_up: function(e)
 },
 
 
+/**
+ * Handler for mouse move events for dragging list column
+ */
+column_drag_mouse_move: function(e)
+{
+  if (this.drag_start) {
+    // check mouse movement, of less than 3 pixels, don't start dragging
+    var i, m = rcube_event.get_mouse_pos(e);
+
+    if (!this.drag_mouse_start || (Math.abs(m.x - this.drag_mouse_start.x) < 3 && Math.abs(m.y - this.drag_mouse_start.y) < 3))
+      return false;
+
+    if (!this.col_draglayer) {
+      var lpos = $(this.list).offset(),
+        cells = this.list.tHead.rows[0].cells;
+
+      // create dragging layer
+      this.col_draglayer = $('<div>').attr('id', 'rcmcoldraglayer')
+        .css(lpos).css({ position:'absolute', 'z-index':2001,
+           'background-color':'white', opacity:0.75,
+           height: (this.frame.offsetHeight-2)+'px', width: (this.frame.offsetWidth-2)+'px' })
+        .appendTo(document.body)
+        // ... and column position indicator
+       .append($('<div>').attr('id', 'rcmcolumnindicator')
+          .css({ position:'absolute', 'border-right':'2px dotted #555', 
+          'z-index':2002, height: (this.frame.offsetHeight-2)+'px' }));
+
+      this.cols = [];
+      this.list_pos = this.list_min_pos = lpos.left;
+      // save columns positions
+      for (i=0; i<cells.length; i++) {
+        this.cols[i] = cells[i].offsetWidth;
+        if (this.column_fixed !== null && i <= this.column_fixed) {
+          this.list_min_pos += this.cols[i];
+        }
+      }
+    }
+
+    this.col_draglayer.show();
+    this.col_drag_active = true;
+    this.triggerEvent('column_dragstart');
+  }
+
+  // set column indicator position
+  if (this.col_drag_active && this.col_draglayer) {
+    var i, cpos = 0, pos = rcube_event.get_mouse_pos(e);
+
+    for (i=0; i<this.cols.length; i++) {
+      if (pos.x >= this.cols[i]/2 + this.list_pos + cpos)
+        cpos += this.cols[i];
+      else
+        break;
+    }
+
+    // handle fixed columns on left
+    if (i == 0 && this.list_min_pos > pos.x)
+      cpos = this.list_min_pos - this.list_pos;
+    // empty list needs some assignment
+    else if (!this.list.rowcount && i == this.cols.length)
+      cpos -= 2;
+    $('#rcmcolumnindicator').css({ width: cpos+'px'});
+    this.triggerEvent('column_dragmove', e?e:window.event);
+  }
+
+  this.drag_start = false;
+
+  return false;
+},
+
+
+/**
+ * Handler for mouse up events for dragging list columns
+ */
+column_drag_mouse_up: function(e)
+{
+  document.onmousemove = null;
+
+  if (this.col_draglayer) {
+    (this.col_draglayer).remove();
+    this.col_draglayer = null;
+  }
+
+  if (this.col_drag_active)
+    this.focus();
+  this.col_drag_active = false;
+
+  rcube_event.remove_listener({event:'mousemove', object:this, method:'column_drag_mouse_move'});
+  rcube_event.remove_listener({event:'mouseup', object:this, method:'column_drag_mouse_up'});
+  // remove temp divs
+  this.del_dragfix();
+
+  if (this.selected_column !== null && this.cols && this.cols.length) {
+    var i, cpos = 0, pos = rcube_event.get_mouse_pos(e);
+
+    // find destination position
+    for (i=0; i<this.cols.length; i++) {
+      if (pos.x >= this.cols[i]/2 + this.list_pos + cpos)
+        cpos += this.cols[i];
+      else
+        break;
+    }
+
+    if (i != this.selected_column && i != this.selected_column+1) {
+      this.column_replace(this.selected_column, i);
+    }
+  }
+
+  this.triggerEvent('column_dragend');
+
+  return rcube_event.cancel(e);
+},
+
+
+/**
+ * Creates a layer for drag&drop over iframes
+ */
+add_dragfix: function()
+{
+  $('iframe').each(function() {
+    $('<div class="iframe-dragdrop-fix"></div>')
+      .css({background: '#fff',
+        width: this.offsetWidth+'px', height: this.offsetHeight+'px',
+        position: 'absolute', opacity: '0.001', zIndex: 1000
+      })
+      .css($(this).offset())
+      .appendTo(document.body);
+  });                                                                
+},
+
+
+/**
+ * Removes the layer for drag&drop over iframes
+ */
+del_dragfix: function()
+{
+  $('div.iframe-dragdrop-fix').each(function() { this.parentNode.removeChild(this); });
+},
+
+
+/**
+ * Replaces two columns
+ */
+column_replace: function(from, to)
+{
+  var cells = this.list.tHead.rows[0].cells,
+    elem = cells[from],
+    before = cells[to],
+    td = document.createElement('td');
+
+  // replace header cells
+  if (before)
+    cells[0].parentNode.insertBefore(td, before);
+  else
+    cells[0].parentNode.appendChild(td);
+  cells[0].parentNode.replaceChild(elem, td);
+
+  // replace list cells
+  for (r=0; r<this.list.tBodies[0].rows.length; r++) {
+    row = this.list.tBodies[0].rows[r];
+
+    elem = row.cells[from];
+    before = row.cells[to];
+    td = document.createElement('td');
+
+    if (before)
+      row.insertBefore(td, before);
+    else
+      row.appendChild(td);
+    row.replaceChild(elem, td);
+  }
+
+  // update subject column position
+  if (this.subject_col == from)
+    this.subject_col = to > from ? to - 1 : to;
+
+  this.triggerEvent('column_replace');
+},
+
+
 /**
  * Creating the list in background
  */
diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index bd7fa9c43..6a56d2a75 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -154,13 +154,16 @@ function rcmail_message_list($attrib)
     $attrib['id'] = 'rcubemessagelist';
 
   // define list of cols to be displayed based on parameter or config
-  if (empty($attrib['columns']))
-      $a_show_cols = is_array($CONFIG['list_cols']) ? $CONFIG['list_cols'] : array('subject');
-  else
-      $a_show_cols = preg_split('/[\s,;]+/', strip_quotes($attrib['columns']));
+  if (empty($attrib['columns'])) {
+    $a_show_cols = is_array($CONFIG['list_cols']) ? $CONFIG['list_cols'] : array('subject');
+    $OUTPUT->set_env('col_movable', !in_array('list_cols', (array)$CONFIG['dont_override']));
+  }
+  else {
+    $a_show_cols = preg_split('/[\s,;]+/', strip_quotes($attrib['columns']));
+    $attrib['columns'] = $a_show_cols;
+  }
 
   // save some variables for use in ajax list
-  $_SESSION['list_columns'] = $a_show_cols;
   $_SESSION['list_attrib'] = $attrib;
   
   $mbox = $IMAP->get_mailbox_name();
@@ -220,7 +223,7 @@ function rcmail_message_list($attrib)
     $attrib,
     html::tag('thead', null, html::tag('tr', null, $thead)) .
       html::tag('tbody', null, ''),
-    array('style', 'class', 'id', 'cellpadding', 'cellspacing', 'border', 'summary'));
+        array('style', 'class', 'id', 'cellpadding', 'cellspacing', 'border', 'summary'));
 }
 
 
@@ -232,10 +235,10 @@ function rcmail_js_message_list($a_headers, $insert_top=FALSE, $replace=TRUE, $h
 {
   global $CONFIG, $IMAP, $OUTPUT;
 
-  if (empty($_SESSION['list_columns']))
-    $a_show_cols = is_array($CONFIG['list_cols']) ? $CONFIG['list_cols'] : array('subject');
+  if (!empty($_SESSION['list_attrib']['columns']))
+    $a_show_cols = $_SESSION['list_attrib']['columns'];
   else
-    $a_show_cols = $_SESSION['list_columns'];
+    $a_show_cols = is_array($CONFIG['list_cols']) ? $CONFIG['list_cols'] : array('subject');
 
   $mbox = $IMAP->get_mailbox_name();
   $delim = $IMAP->get_hierarchy_delimiter();
@@ -324,7 +327,7 @@ function rcmail_js_message_list($a_headers, $insert_top=FALSE, $replace=TRUE, $h
 
   if ($browser->ie && $replace)
     $OUTPUT->command('offline_message_list', false);
-  }
+}
 
 
 /*
diff --git a/program/steps/mail/list.inc b/program/steps/mail/list.inc
index 89d127cdc..3b8c39fc8 100644
--- a/program/steps/mail/list.inc
+++ b/program/steps/mail/list.inc
@@ -45,7 +45,7 @@ else
 if ($cols = get_input_value('_cols', RCUBE_INPUT_GET))
 {
   $save_arr = array();
-  $_SESSION['list_columns'] = $save_arr['list_cols'] = explode(',', $cols);
+  $save_arr['list_cols'] = explode(',', $cols);
 }
 
 if ($save_arr)  
-- 
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