/*

 detailsSelect.js -- a DHTML library for drag/rubber-band selection in gbrowse
                      This class handles details-specific configuration.

 Sheldon McKay <mckays@cshl.edu>
 $Id: detailSelect.js,v 1.1.2.5 2008/03/17 22:16:45 lstein Exp $

*/

var detailsObject;
var detailBalloon;

// Constructor
var Details = function () {
  this.imageId    = 'detail_image';
  this.marginTop  = '35px';
  this.background = 'blue';
  this.fontColor  = 'white';
  this.menuWidth  = '200px';
  return this;
}

// Inherit from base class SelectArea
Details.prototype = new SelectArea();

// Details-specific config.
Details.prototype.initialize = function() {
  var self = new Details;
  
  var i = document.getElementById(self.imageId);
  if (!i) return false;

  i = self.replaceImage(i);
  

  var p = document.getElementById('panels');
  self.height      = self.elementLocation(i,'height');
  self.panelHeight = self.elementLocation(p,'height');
  self.width       = self.elementLocation(i,'width');
  self.selectLayer = p;

  self.top     = self.elementLocation(i,'y1');
  self.bottom  = self.elementLocation(i,'y2');
  self.left    = self.elementLocation(i,'x1');
  self.right   = self.elementLocation(i,'x2');

//   try {
//       detailBalloon = new Balloon();
//       detailBalloon.vOffset  = 1;
//       detailBalloon.showOnly = 2; // just show twice
//       var helpFunction = function(event) {
// 	  if (!event) {
// 	      event = window.event;
// 	  }
// 	  var help = '<b>Scalebar:</b> Click here to recenter or click and drag left or right to select a region';
// 	  detailBalloon.showTooltip(event,help,0,250);
//       }
//       i.onmouseover = helpFunction;
//   }
//   catch(e) {
//       i.setAttribute('title','click and drag to select a region');
//   }

  self.scalebar = i;
  self.getSegment(i);
  self.addSelectMenu('detail');
  self.addSelectBox('detail');
  detailsObject = self;
}

Details.prototype.startSelection = function(event) {
  var self = detailsObject;
  var evt = event || window.event;
  SelectArea.prototype.startRubber(self,event);
}

Details.prototype.getSegment = function(i) {
  // get the segment info from gbrowse CGI parameters
  this.ref          = document.mainform.ref.value;
  this.segmentStart = parseInt(document.mainform.start.value);
  this.segmentEnd   = parseInt(document.mainform.stop.value);
  this.flip         = document.mainform.flip.checked;
  this.padLeft      = parseInt(document.mainform.image_padding.value);
  this.pixelToDNA   = parseFloat(document.mainform.details_pixel_ratio.value);

  // If the keystyle is left, there may been extra padding
  var actualWidth   = this.elementLocation(i,'width');
  var expectedWidth = parseInt(document.mainform.detail_width.value);
  if (actualWidth > expectedWidth) {
    this.padLeft     += actualWidth - expectedWidth;
  }

  this.pixelStart   = this.left  + this.padLeft;
}

Details.prototype.formatMenu = function() {
  this.menuHTML = this.selectMenu.innerHTML || '\
  <table style="width:100%">\
         <tr>\
           <th style="background:lightgrey;cell-padding:5">\
             SELECTION\
             <a style="right:0px;position:absolute" href="javascript:SelectArea.prototype.cancelRubber()">\
               [X]\
             </a>\
           </th>\
         </tr>\
         <tr>\
           <td>\
             <a href="javascript:SelectArea.prototype.clearAndSubmit()">Zoom in</a>\
           </td>\
         </tr>\
         <tr>\
           <td>\
             <a href="javascript:SelectArea.prototype.clearAndRecenter()">Recenter on this region</a>\
           </td>\
         </tr>\
         <tr>\
           <td onmouseup="SelectArea.prototype.cancelRubber()">\
             <a href="?plugin=FastaDumper;plugin_action=Go;name=SELECTION" target="_new">\
              Dump selection as FASTA\
             </a>\
           </td>\
         </tr>\
       </table>';
}