experimental/palette/palette.js

   1 // Copyright (c) 2011 Google, Inc.
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   3 // Permission is hereby granted, free of charge, to any person obtaining a copy
   4 // of this software and associated documentation files (the "Software"), to deal
   5 // in the Software without restriction, including without limitation the rights
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   7 // copies of the Software, and to permit persons to whom the Software is
   8 // furnished to do so, subject to the following conditions:
   9 //
  10 // The above copyright notice and this permission notice shall be included in
  11 // all copies or substantial portions of the Software.
  12 //
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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  19 // THE SOFTWARE.
  20
  21 /**
  22  * @fileoverview Dygraphs options palette.
  23  *
  24  * @author konigsberg@google.com (Robert Konigsberg)
  25  */
  26 "use strict";
  27
  28 /**
  29  * scope is either "global", "series", "x", "y" or "y2".
  30  */
  31 function Palette(scope) {
  32   // Contains pair of "input" (the input object) and "row" (the parent row)
  33   // Also contains functionString.
  34   this.model = {};
  35   // This is meant to be overridden by a palette host.
  36   this.onchange = function() {};
  37   this.scope = scope;
  38   this.root = null;
  39 }
  40
  41 Palette.createChild = function(type, parentElement, className) {
  42   var element = document.createElement(type);
  43   parentElement.appendChild(element);
  44   if (className) {
  45     element.className = className;
  46   }
  47   return element;
  48 };
  49
  50 Palette.prototype.create = function(parentElement) {
  51   var palette = this;
  52
  53   var table = Palette.createChild("div", parentElement[0], "palette");
  54   this.root = table;
  55   table.width="300px";
  56
  57   this.tooltip = new Tooltip();
  58
  59   // Build the header
  60   var header = Palette.createChild("div", table, "header");
  61   header.style.visibility = "visible";
  62
  63   // CURRENTLY HIDDEN.
  64   var tmp = Palette.createChild("button", Palette.createChild("span", header));
  65   tmp.textContent = "Copy"
  66   tmp.onclick = function() {
  67     var textarea = new TextArea();
  68     textarea.show("header", "Now is the time for all good men\nto come to the aid of their country");
  69   };
  70   tmp.style.display = "none";
  71
  72   // One row per option.
  73   for (var opt in opts) {
  74     try {
  75       if (opts.hasOwnProperty(opt)) {
  76         var type = opts[opt].type;
  77
  78         var scope = opts[opt].scope || [ "global" ]; // Scope can be empty, infer "global" only.
  79         var valid = scope[0] == "*" || $.inArray(this.scope, scope) >= 0;
  80         if (!valid) {
  81           continue;
  82         }
  83
  84         var isFunction = type.indexOf("function(") == 0;
  85         var row = Palette.createChild("div", table);
  86         row.onmouseover = function(source, title, type, body) {
  87           return function() {
  88             palette.tooltip.show(source, title, type, body);
  89           };
  90         } (row, opt, type, Dygraph.OPTIONS_REFERENCE[opt].description);
  91         row.onmouseout = function() { palette.tooltip.hide(); };
  92
  93         var div = Palette.createChild("span", row, "name");
  94         div.textContent = opt;
  95
  96         var value = Palette.createChild("span", row, "option");
  97
  98         if (isFunction) {
  99            var input = Palette.createChild("button", value);
 100            input.onclick = function(opt, palette) {
 101              return function(event) {
 102                var entry = palette.model[opt];
 103                var inputValue = entry.functionString;
 104                if (inputValue == null || inputValue.length == 0) {
 105                  inputValue = opts[opt].type + "{\n\n}";
 106                }
 107                      var textarea = new TextArea();
 108                      textarea.show(opt, inputValue);
 109                      textarea.okCallback = function(value) {
 110                  if (value != inputValue) {
 111                    entry.functionString = value;
 112                    entry.input.textContent = value ? "defined" : "not defined";
 113                    palette.onchange();
 114                  }
 115                }
 116              }
 117            }(opt, this);
 118         } else if (type == "boolean") {
 119            var input = Palette.createChild("button", value);
 120            input.onclick = function(e) {
 121              var btn = e.target;
 122              if (btn.value == "none") {
 123                Palette.populateBooleanButton(btn, "true");
 124              } else if (btn.value == "true") {
 125                Palette.populateBooleanButton(btn, "false");
 126              } else {
 127                Palette.populateBooleanButton(btn, "none");
 128              }
 129              palette.onchange();
 130            };
 131         } else {
 132           var input = Palette.createChild("input", value, "textInput");
 133           input.type="text";
 134           input.onkeypress = function(event) {
 135             var keycode = event.which;
 136             if (keycode == 13 || keycode == 8) {
 137               palette.onchange();
 138             }
 139           }
 140         }
 141         this.model[opt] = { input: input, row: row };
 142       }
 143     } catch(err) {
 144       throw "For option " + opt + ":" + err;
 145     }
 146   }
 147   this.filter("");
 148 }
 149
 150 // TODO: replace semicolon parsing with comma parsing, and supporting quotes.
 151 Palette.parseStringArray = function(value) {
 152   if (value == null || value.length == 0) {
 153     return null;
 154   }
 155   return value.split(";");
 156 }
 157
 158 Palette.parseBooleanArray = function(value) {
 159   if (value == null || value.length == 0) {
 160     return null;
 161   }
 162   return value.split(',').map(function(x) { return x.trim() == "true"; });
 163 }
 164
 165 Palette.parseFloatArray = function(value) {
 166   if (value == null || value.length == 0) {
 167     return null;
 168   }
 169   return value.split(',').map(function(x) { return parseFloat(x); });
 170 }
 171
 172 Palette.parseIntArray = function(value) {
 173   if (value == null || value.length == 0) {
 174     return null;
 175   }
 176   return value.split(',').map(function(x) { return parseInt(x); });
 177 }
 178
 179 Palette.prototype.read = function() {
 180   var results = {};
 181   for (var opt in this.model) {
 182     if (this.model.hasOwnProperty(opt)) {
 183       var type = opts[opt].type;
 184       var isFunction = type.indexOf("function(") == 0;
 185       var input = this.model[opt].input;
 186       var value = isFunction ? this.model[opt].functionString : input.value;
 187       if (value && value.length != 0) {
 188         if (type == "boolean") {
 189           if (value == "false") {
 190             results[opt] = false;
 191           }
 192           if (value == "true") {
 193             results[opt] = true;
 194           }
 195           // Ignore value == "none"
 196         } else if (type == "int") {
 197           results[opt] = parseInt(value);
 198         } else if (type == "float") {
 199           results[opt] = parseFloat(value);
 200         } else if (type == "array<string>") {
 201           results[opt] = Palette.parseStringArray(value);
 202         } else if (type == "array<float>") {
 203           results[opt] = Palette.parseFloatArray(value);
 204         } else if (type == "array<boolean>") {
 205           results[opt] = Palette.parseBooleanArray(value);
 206         } else if (type == "array<Date>") {
 207           results[opt] = Palette.parseIntArray(value);
 208         } else if (isFunction) {
 209           var localVariable = null;
 210           eval("localVariable = " + value);
 211           results[opt] = localVariable;
 212         } else {
 213           results[opt] = value;
 214         }
 215       }
 216     }
 217   }
 218   return results;
 219 }
 220
 221 /**
 222  * Write to input elements.
 223  */
 224 Palette.prototype.write = function(hash) {
 225   var results = {};
 226   for (var opt in this.model) {
 227     if (this.model.hasOwnProperty(opt)) {
 228       var input = this.model[opt].input;
 229       var type = opts[opt].type;
 230       var value = hash[opt];
 231       if (type == "boolean") {
 232         var text = value == true ? "true" : (value == false ? "false" : "none");
 233         Palette.populateBooleanButton(input, text);
 234       } else if (type == "array<string>") {
 235         if (value) {
 236           input.value = value.join("; ");
 237         }
 238       } else if (type.indexOf("array") == 0) {
 239         if (value) {
 240           input.value = value.join(", ");
 241         }
 242       } else if (type.indexOf("function(") == 0) {
 243         input.textContent = value ? "defined" : "not defined";
 244         this.model[opt].functionString = value ? value.toString() : null;
 245       } else {
 246         if (value) {
 247           input.value = value;
 248         }
 249       }
 250     }
 251   }
 252 }
 253
 254 Palette.populateBooleanButton = function(button, value) {
 255   button.innerHTML = value;
 256   button.value = value;
 257 }
 258
 259 Palette.prototype.filter = function(pattern) {
 260   pattern = pattern.toLowerCase();
 261   var even = true;
 262   for (var opt in this.model) {
 263     if (this.model.hasOwnProperty(opt)) {
 264       var row = this.model[opt].row;
 265       var matches = opt.toLowerCase().indexOf(pattern) >= 0;
 266       row.style.display = matches ? "block" : "none";
 267       if (matches) {
 268         row.className = even ? "even" : "odd";
 269         even = !even;
 270       }
 271     }
 272   }
 273 }