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   1  // ===================================================================
   2  // Author: Matt Kruse <matt@mattkruse.com>
   3  // WWW: http://www.mattkruse.com/
   4  //
   5  // NOTICE: You may use this code for any purpose, commercial or
   6  // private, without any further permission from the author. You may
   7  // remove this notice from your final code if you wish, however it is
   8  // appreciated by the author if at least my web site address is kept.
   9  //
  10  // You may *NOT* re-distribute this code in any way except through its
  11  // use. That means, you can include it in your product, or your web
  12  // site, or any other form where the code is actually being used. You
  13  // may not put the plain javascript up on your site for download or
  14  // include it in your javascript libraries for download. Instead,
  15  // please just point to my URL to ensure the most up-to-date versions
  16  // of the files. Thanks.
  17  // ===================================================================
  18  
  19  
  20  /* 
  21  ColorPicker.js
  22  Author: Matt Kruse
  23  Last modified: 6/19/01
  24  
  25  DESCRIPTION: This widget is used to select a color, in hexadecimal #RRGGBB 
  26  form. It uses a color "swatch" to display the standard 216-color web-safe 
  27  palette. The user can then click on a color to select it.
  28  
  29  COMPATABILITY: See notes in AnchorPosition.js and PopupWindow.js.
  30  Only the latest DHTML-capable browsers will show the color and hex values
  31  at the bottom as your mouse goes over them.
  32  
  33  USAGE:
  34  // Create a new ColorPicker object using DHTML popup
  35  var cp = new ColorPicker();
  36  
  37  // Create a new ColorPicker object using Window Popup
  38  var cp = new ColorPicker('window');
  39  
  40  // Add a link in your page to trigger the popup. For example:
  41  <A HREF="#" onClick="cp.show('pick');return false;" NAME="pick" ID="pick">Pick</A>
  42  
  43  // If using DHTML popup, write out the required DIV tag near the bottom
  44  // of your page.
  45  <SCRIPT LANGUAGE="JavaScript">cp.writeDiv()</SCRIPT>
  46  
  47  // Write the 'pickColor' function that will be called when the user clicks
  48  // a color and do something with the value
  49  function pickColor(color) {
  50      field.value = color;
  51      }
  52  
  53  NOTES:
  54  1) Requires the functions in AnchorPosition.js and PopupWindow.js
  55  
  56  2) Your anchor tag MUST contain both NAME and ID attributes which are the 
  57     same. For example:
  58     <A NAME="test" ID="test"> </A>
  59  
  60  3) There must be at least a space between <A> </A> for IE5.5 to see the 
  61     anchor tag correctly. Do not do <A></A> with no space.
  62  
  63  4) When a ColorPicker object is created, a handler for 'onmouseup' is
  64     attached to any event handler you may have already defined. Do NOT define
  65     an event handler for 'onmouseup' after you define a ColorPicker object or
  66     the color picker will not hide itself correctly.
  67  */ 
  68  
  69  function ColorPicker_writeDiv() {
  70      document.writeln("<DIV ID=\"colorPickerDiv\" STYLE=\"position:absolute;visibility:hidden;\"> </DIV>");
  71      }
  72  
  73  function ColorPicker_show(anchorname) {
  74      this.showPopup(anchorname);
  75      }
  76  
  77  function ColorPicker_pickColor(color,obj) {
  78      obj.hidePopup();
  79      if (window.pickColor) {
  80          pickColor(color);
  81          }
  82      else {
  83          alert("You must define a function named 'pickColor' to receive the value clicked!");
  84          }
  85      }
  86      
  87  // This function runs when you move your mouse over a color block, if you have a newer browser
  88  function ColorPicker_highlightColor(c) {
  89      var thedoc = (arguments.length>1)?arguments[1]:window.document;
  90      var d = thedoc.getElementById("colorPickerSelectedColor");
  91      d.style.backgroundColor = c;
  92      d = thedoc.getElementById("colorPickerSelectedColorValue");
  93      d.innerHTML = c;
  94      }
  95  
  96  function ColorPicker() {
  97      var windowMode = false;
  98      // Create a new PopupWindow object
  99      if (arguments.length==0) {
 100          var divname = "colorPickerDiv";
 101          }
 102      else if (arguments[0] == "window") {
 103          var divname = '';
 104          windowMode = true;
 105          }
 106      else {
 107          var divname = arguments[0];
 108          }
 109      
 110      if (divname != "") {
 111          var cp = new PopupWindow(divname);
 112          }
 113      else {
 114          var cp = new PopupWindow();
 115          cp.setSize(250,225);
 116          }
 117  
 118      // Object variables
 119      cp.currentValue = "#FFFFFF";
 120      
 121      // Method Mappings
 122      cp.writeDiv = ColorPicker_writeDiv;
 123      cp.highlightColor = ColorPicker_highlightColor;
 124      cp.show = ColorPicker_show;
 125  
 126      // Code to populate color picker window
 127      var colors = new Array("#000000","#000033","#000066","#000099","#0000CC","#0000FF","#330000","#330033","#330066","#330099","#3300CC",
 128                              "#3300FF","#660000","#660033","#660066","#660099","#6600CC","#6600FF","#990000","#990033","#990066","#990099",
 129                              "#9900CC","#9900FF","#CC0000","#CC0033","#CC0066","#CC0099","#CC00CC","#CC00FF","#FF0000","#FF0033","#FF0066",
 130                              "#FF0099","#FF00CC","#FF00FF","#003300","#003333","#003366","#003399","#0033CC","#0033FF","#333300","#333333",
 131                              "#333366","#333399","#3333CC","#3333FF","#663300","#663333","#663366","#663399","#6633CC","#6633FF","#993300",
 132                              "#993333","#993366","#993399","#9933CC","#9933FF","#CC3300","#CC3333","#CC3366","#CC3399","#CC33CC","#CC33FF",
 133                              "#FF3300","#FF3333","#FF3366","#FF3399","#FF33CC","#FF33FF","#006600","#006633","#006666","#006699","#0066CC",
 134                              "#0066FF","#336600","#336633","#336666","#336699","#3366CC","#3366FF","#666600","#666633","#666666","#666699",
 135                              "#6666CC","#6666FF","#996600","#996633","#996666","#996699","#9966CC","#9966FF","#CC6600","#CC6633","#CC6666",
 136                              "#CC6699","#CC66CC","#CC66FF","#FF6600","#FF6633","#FF6666","#FF6699","#FF66CC","#FF66FF","#009900","#009933",
 137                              "#009966","#009999","#0099CC","#0099FF","#339900","#339933","#339966","#339999","#3399CC","#3399FF","#669900",
 138                              "#669933","#669966","#669999","#6699CC","#6699FF","#999900","#999933","#999966","#999999","#9999CC","#9999FF",
 139                              "#CC9900","#CC9933","#CC9966","#CC9999","#CC99CC","#CC99FF","#FF9900","#FF9933","#FF9966","#FF9999","#FF99CC",
 140                              "#FF99FF","#00CC00","#00CC33","#00CC66","#00CC99","#00CCCC","#00CCFF","#33CC00","#33CC33","#33CC66","#33CC99",
 141                              "#33CCCC","#33CCFF","#66CC00","#66CC33","#66CC66","#66CC99","#66CCCC","#66CCFF","#99CC00","#99CC33","#99CC66",
 142                              "#99CC99","#99CCCC","#99CCFF","#CCCC00","#CCCC33","#CCCC66","#CCCC99","#CCCCCC","#CCCCFF","#FFCC00","#FFCC33",
 143                              "#FFCC66","#FFCC99","#FFCCCC","#FFCCFF","#00FF00","#00FF33","#00FF66","#00FF99","#00FFCC","#00FFFF","#33FF00",
 144                              "#33FF33","#33FF66","#33FF99","#33FFCC","#33FFFF","#66FF00","#66FF33","#66FF66","#66FF99","#66FFCC","#66FFFF",
 145                              "#99FF00","#99FF33","#99FF66","#99FF99","#99FFCC","#99FFFF","#CCFF00","#CCFF33","#CCFF66","#CCFF99","#CCFFCC",
 146                              "#CCFFFF","#FFFF00","#FFFF33","#FFFF66","#FFFF99","#FFFFCC","#FFFFFF");
 147      var total = colors.length;
 148      var width = 18;
 149      var cp_contents = "";
 150      var windowRef = (windowMode)?"window.opener.":"";
 151      if (windowMode) {
 152          cp_contents += "<HTML><HEAD><TITLE>Select Color</TITLE></HEAD>";
 153          cp_contents += "<BODY MARGINWIDTH=0 MARGINHEIGHT=0 LEFMARGIN=0 TOPMARGIN=0><CENTER>";
 154          }
 155      cp_contents += "<TABLE BORDER=1 CELLSPACING=1 CELLPADDING=0>";
 156      var use_highlight = (document.getElementById || document.all)?true:false;
 157      for (var i=0; i<total; i++) {
 158          if ((i % width) == 0) { cp_contents += "<TR>"; }
 159          if (use_highlight) { var mo = 'onMouseOver="'+windowRef+'ColorPicker_highlightColor(\''+colors[i]+'\',window.document)"'; }
 160          else { mo = ""; }
 161          cp_contents += '<TD BGCOLOR="'+colors[i]+'"><FONT SIZE="-3"><A HREF="#" onClick="'+windowRef+'ColorPicker_pickColor(\''+colors[i]+'\','+windowRef+'window.popupWindowObjects['+cp.index+']);return false;" '+mo+' STYLE="text-decoration:none;">&nbsp;&nbsp;&nbsp;</A></FONT></TD>';
 162          if ( ((i+1)>=total) || (((i+1) % width) == 0)) { 
 163              cp_contents += "</TR>";
 164              }
 165          }
 166      // If the browser supports dynamically changing TD cells, add the fancy stuff
 167      if (document.getElementById) {
 168          var width1 = Math.floor(width/2);
 169          var width2 = width = width1;
 170          cp_contents += "<TR><TD COLSPAN='"+width1+"' BGCOLOR='#ffffff' ID='colorPickerSelectedColor'>&nbsp;</TD><TD COLSPAN='"+width2+"' ALIGN='CENTER' ID='colorPickerSelectedColorValue'>#FFFFFF</TD></TR>";
 171          }
 172      cp_contents += "</TABLE>";
 173      if (windowMode) {
 174          cp_contents += "</CENTER></BODY></HTML>";
 175          }
 176      // end populate code
 177  
 178      // Write the contents to the popup object
 179      cp.populate(cp_contents);
 180      // Move the table down a bit so you can see it
 181      cp.offsetY = 25;
 182      cp.autoHide();
 183      return cp;
 184      }