plugins/gallery/tagging.js
author Dan
Sun, 17 Feb 2008 14:14:59 -0500
changeset 23 43f9c64a7672
parent 18 c1c398349651
child 24 7f3bd3030ae9
permissions -rw-r--r--
Minor change to tag code AJAX array behavior
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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function snapr_add_tag()
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{
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  var image = document.getElementById('snapr_preview_img');
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  image.parentNode.onclick = function(e)
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  {
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    canvas_click(this);
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  }
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  image.parentNode.setAttribute('canvas:oncomplete', 'snapr_process_canvas_add(this);');
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  image.parentNode.setAttribute('canvas:oncancel', 'obj.onclick = null;');
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}
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function snapr_process_canvas_add(obj)
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{
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  obj.onclick = null;
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  var abs_x = $(obj).Left() + obj.canvas.left;
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  var abs_y = $(obj).Top()  + obj.canvas.top;
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  var height = obj.canvas.height + 2;
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  var entry_div = document.createElement('div');
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  entry_div.className = 'snapr_tag_entry';
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  entry_div.style.position = 'absolute';
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  entry_div.style.top = String(abs_y + height) + 'px';
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  entry_div.style.left = String(abs_x)+ 'px';
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  entry_div.appendChild(document.createTextNode('Enter a tag:'));
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  entry_div.appendChild(document.createElement('br'));
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  var ta = document.createElement('textarea');
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  ta.rows = '7';
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  ta.cols = '30';
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  entry_div.appendChild(ta);
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  entry_div.appendChild(document.createElement('br'));
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  var a_add = document.createElement('a');
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  a_add.href = '#';
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  a_add.onclick = function()
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  {
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    snapr_finalize_canvas_add(this.parentNode, this.parentNode.parentNode.canvas, this.previousSibling.previousSibling.value);
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    return false;
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  }
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  a_add.appendChild(document.createTextNode('Add tag'));
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  entry_div.appendChild(a_add);
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  entry_div.appendChild(document.createTextNode(' | '));
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  var a_cancel = document.createElement('a');
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  a_cancel.href = '#';
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  a_cancel.onclick = function()
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  {
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    snapr_finalize_canvas_cancel(this.parentNode);
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    return false;
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  }
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  a_cancel.appendChild(document.createTextNode('Cancel'));
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  entry_div.appendChild(a_cancel);
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  obj.appendChild(entry_div);
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  ta.focus();
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}
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function snapr_finalize_canvas_add(obj, canvas_data, tag)
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{
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  // add the new box
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  var id = obj.parentNode.getAttribute('snapr:imgid');
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  if ( !id )
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    return false;
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  // destroy form, etc.
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  var parent = obj.parentNode;
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  parent.removeChild(parent.canvas_box_obj);
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  parent.removeChild(obj);
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  var canvas_json = toJSONString(canvas_data);
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  ajaxPost(makeUrlNS('Gallery', id), 'ajax=true&act=add_tag&tag=' + escape(tag) + '&canvas_params=' + escape(canvas_json), snapr_process_ajax_tag_packet);
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}
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function snapr_finalize_canvas_cancel(obj)
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{
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  var parent = obj.parentNode;
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  parent.removeChild(parent.canvas_box_obj);
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  parent.removeChild(obj);
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}
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function snapr_draw_note(obj, tag, canvas_data, note_id, initial_hide, auth_delete)
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{
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  var newbox = canvas_create_box(obj, canvas_data.left, canvas_data.top, canvas_data.width, canvas_data.height);
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  newbox.tag_id = note_id;
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  obj.onmouseover = function()
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  {
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    var boxen = this.getElementsByTagName('div');
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    for ( var i = 0; i < boxen.length; i++ )
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      if ( boxen[i].className == 'canvasbox' )
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        boxen[i].style.display = 'block';
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  }
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  obj.onmouseout = function()
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  {
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    var boxen = this.getElementsByTagName('div');
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    for ( var i = 0; i < boxen.length; i++ )
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      if ( boxen[i].className == 'canvasbox' )
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        boxen[i].style.display = 'none';
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  }
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  newbox.onmouseover = function()
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  {
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    this.style.borderColor = '#FFFF00';
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    this.firstChild.style.borderColor = '#000000';
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    snapr_display_note(this.noteObj);
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  }
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  newbox.onmouseout = function()
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  {
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    this.style.borderColor = '#000000';
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    this.firstChild.style.borderColor = '#FFFFFF';
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    snapr_hide_note(this.noteObj);
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  }
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  if ( auth_delete )
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  {
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    var p = document.createElement('p');
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    p.style.cssFloat = 'right';
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    p.style.styleFloat = 'right';
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    p.style.fontWeight = 'bold';
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    p.style.margin = '5px';
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    var a_del = document.createElement('a');
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    a_del.style.color = '#FF0000';
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    a_del.href = '#';
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    a_del.onclick = function()
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    {
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      snapr_nuke_tag(this.parentNode.parentNode.parentNode);
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      return false;
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    }
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    a_del.appendChild(document.createTextNode('[X]'));
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    p.appendChild(a_del);
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    newbox.firstChild.appendChild(p);
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  }
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  var abs_x = $(newbox).Left();
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  var abs_y = $(newbox).Top() + $(newbox).Height() + 2;
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  var noteObj = document.createElement('div');
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  newbox.noteObj = noteObj;
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  noteObj.className = 'snapr_tag';
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  noteObj.style.display = 'none';
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  noteObj.style.position = 'absolute';
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  noteObj.style.top = abs_y + 'px';
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  noteObj.style.left = abs_x + 'px';
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  var re = new RegExp(unescape('%0A'), 'g');
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  noteObj.innerHTML = tag.replace(re, "<br />\n");
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  obj.appendChild(noteObj);
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  if ( initial_hide )
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    newbox.style.display = 'none';
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}
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function snapr_display_note(note)
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{
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  //domObjChangeOpac(0, note);
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  note.style.display = 'block';
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  //domOpacity(note, 0, 100, 500);
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}
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function snapr_hide_note(note)
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{
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  //domOpacity(note, 100, 0, 500);
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  //setTimeout(function()
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  //  {
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      note.style.display = 'none';
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  //  }, 600);
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}
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function snapr_nuke_tag(obj)
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{
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  // add the new box
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  var parent_obj = document.getElementById('snapr_preview_img').parentNode;
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  var id = parent_obj.getAttribute('snapr:imgid');
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  if ( !id )
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    return false;
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  ajaxPost(makeUrlNS('Gallery', id), 'ajax=true&act=del_tag&tag_id=' + obj.tag_id, snapr_process_ajax_tag_packet);
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}
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function snapr_process_ajax_tag_packet()
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{
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  if ( ajax.readyState == 4 && ajax.status == 200 )
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  {
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    var response = String(ajax.responseText + '');
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    if ( response.substr(0, 1) != '[' && response.substr(0, 1) != '{' )
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    {
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      handle_invalid_json(response);
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      return false;
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    }
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    response = parseJSON(response);
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    if ( response.mode )
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    {
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      if ( response.mode == 'error' )
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      {
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        alert(response.error);
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        return false;
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      }
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   193
    }
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    var parent_obj = document.getElementById('snapr_preview_img').parentNode;
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    for ( var i = 0; i < response.length; i++ )
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    {
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      var packet = response[i];
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      switch(packet.mode)
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      {
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        case 'add':
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   201
          snapr_draw_note(parent_obj, packet.tag, packet.canvas_data, packet.note_id, packet.initial_hide, packet.auth_delete);
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          break;
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        case 'remove':
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          // Server requested to remove a tag
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          var divs = parent_obj.getElementsByTagName('div');
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          for ( var i = 0; i < divs.length; i++ )
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          {
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            var box = divs[i];
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            if ( box.className == 'canvasbox' )
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            {
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   211
              if ( box.tag_id == packet.note_id )
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              {
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                // You. We have orders to shoot. Stand in front of wall.
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                var sibling = box.nextSibling;
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                var parent = box.parentNode;
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                // BLAM.
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                parent.removeChild(sibling);
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                parent.removeChild(box);
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                break;
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              }
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   221
            }
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          }
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          break;
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      }
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    }
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  }
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}
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var snapr_tags_onload = function()
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{
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  // add the new box
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  var parent_obj = document.getElementById('snapr_preview_img').parentNode;
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  var id = parent_obj.getAttribute('snapr:imgid');
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  if ( !id )
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    return false;
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  ajaxPost(makeUrlNS('Gallery', id), 'ajax=true&act=get_tags', snapr_process_ajax_tag_packet);
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}
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addOnloadHook(snapr_tags_onload);
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