incremental commit, non-functional

blockly/blocks/primitives.js

@@ -47,13 +47,19 @@ Blockly.Blocks['cylinder'] = {
       this.appendDummyInput()
           .setAlign(Blockly.ALIGN_RIGHT)
           .appendField(new Blockly.FieldImage("lock_icon.png", 15, 15, "*"))
-          .appendField(new Blockly.FieldCheckbox("FALSE"), "LOCKED");
+          .appendField(new Blockly.FieldCheckbox("FALSE", function(newState) {
+            if (newState) console.log("I'm checked");
+            else console.log("I'm not checked");
+          }), "LOCKED");
     }
     else {
       this.appendDummyInput()
           .setAlign(Blockly.ALIGN_RIGHT)
           .appendField(new Blockly.FieldImage("lock_icon.png", 15, 15, "*"))
-          .appendField(new Blockly.FieldCheckbox("TRUE"), "LOCKED");      
+          .appendField(new Blockly.FieldCheckbox("TRUE", function(newState) {
+            if (newState) console.log("I'm checked");
+            else console.log("I'm not checked");
+          }), "LOCKED");     
     }
     this.appendValueInput('RAD2')
         .setCheck('Number')

blockly/core/field_checkbox.js

@@ -39,9 +39,13 @@ goog.require('Blockly.Field');
  * @extends {Blockly.Field}
  * @constructor
  */
-Blockly.FieldCheckbox = function(state, opt_changeHandler) {
+Blockly.FieldCheckbox = function(state, opt_changeHandler,img1,img2) {
   Blockly.FieldCheckbox.superClass_.constructor.call(this, '');
-
+  // do I have two images?
+  if (img1 && img2) {
+    this.img1 = img1;
+    this.img2 = img2;
+  }
   this.setChangeHandler(opt_changeHandler);
   // Set the initial state.
   this.setValue(state);
@@ -65,11 +69,33 @@ Blockly.FieldCheckbox.prototype.init = function(block) {
   Blockly.FieldCheckbox.superClass_.init.call(this, block);
   // The checkbox doesn't use the inherited text element.
   // Instead it uses a custom checkmark element that is either visible or not.
+  if (this.img1 && this.img2) {
     this.checkElement_ = Blockly.createSvgElement('text',
         {'class': 'blocklyText', 'x': -3}, this.fieldGroup_);
     var textNode = document.createTextNode('\u2713');
     this.checkElement_.appendChild(textNode);
     this.checkElement_.style.display = this.state_ ? 'block' : 'none';
+  }
+  else {
+    // code from field_image 
+    var offsetY = 6 - Blockly.BlockSvg.FIELD_HEIGHT;
+    this.fieldGroup_ = Blockly.createSvgElement('g', {}, null);
+    this.imageElement_ = Blockly.createSvgElement('image',
+        {'height': 15 + 'px',
+         'width': 15 + 'px',
+         'y': offsetY}, this.fieldGroup_);
+    this.setValue(this.img1);
+    if (goog.userAgent.GECKO) {
+      // Due to a Firefox bug which eats mouse events on image elements,
+      // a transparent rectangle needs to be placed on top of the image.
+      this.rectElement_ = Blockly.createSvgElement('rect',
+          {'height': 15 + 'px',
+           'width': 15 + 'px',
+           'y': offsetY,
+           'fill-opacity': 0}, this.fieldGroup_);
+    }
+    block.getSvgRoot().appendChild(this.fieldGroup_);
+  }
 };
 
 /**
@@ -82,6 +108,7 @@ Blockly.FieldCheckbox.prototype.getValue = function() {
 
 /**
  * Set the checkbox to be checked if strBool is 'TRUE', unchecks otherwise.
+ * Can also toggle between two images if they exist.
  * @param {string} strBool New state.
  */
 Blockly.FieldCheckbox.prototype.setValue = function(strBool) {
@@ -91,6 +118,10 @@ Blockly.FieldCheckbox.prototype.setValue = function(strBool) {
     if (this.checkElement_) {
       this.checkElement_.style.display = newState ? 'block' : 'none';
     }
+    else if (this.imageElement_) {
+      this.imageElement_.setAttributeNS('http://www.w3.org/1999/xlink',
+          'xlink:href', newState ? this.img1 : this.img2);
+    }
     if (this.sourceBlock_ && this.sourceBlock_.rendered) {
       this.sourceBlock_.workspace.fireChangeEvent();
     }

blockly/core/xml.js

@@ -79,7 +79,7 @@ Blockly.Xml.blockToDom_ = function(block) {
     }
   }
   function fieldToDom(field) {
-    // for BlocksCAD, I want to save un-editable fields in the xml for stl import.
+    // for BlocksCAD STL import, I want to save un-editable fields in the xml for stl import.
     if (field.name && (field.EDITABLE || field.name == 'STL_FILENAME' || field.name == 'STL_CONTENTS')) {
       var container = goog.dom.createDom('field', null, field.getValue());
       container.setAttribute('name', field.name);
@@ -233,7 +233,7 @@ Blockly.Xml.domToWorkspace = function(workspace, xml) {
   if (workspace.RTL) {
     width = workspace.getWidth();
   }
-  // FOR BLOCKSCAD: set version of input file to null
+  // FOR BLOCKSCAD: set version of input file to null so we can read the input xml version.
   Blockscad.inputVersion = null;
   // Safari 7.1.3 is known to provide node lists with extra references to
   // children beyond the lists' length.  Trust the length, do not use the
@@ -241,9 +241,8 @@ Blockly.Xml.domToWorkspace = function(workspace, xml) {
   var childCount = xml.childNodes.length;
   for (var i = 0; i < childCount; i++) {
     var xmlChild = xml.childNodes[i];
-    // Read in Blockscad file version information.
+    // Read in Blockscad input xml version information.
     if (xmlChild.nodeName.toLowerCase() == 'version') {
-      // console.log("xmlChild read was: ", xmlChild.getAttribute('num'));
       Blockscad.inputVersion = xmlChild.getAttribute('num');
       // console.log("inputVersion is:",Blockscad.inputVersion);
     }
@@ -256,7 +255,7 @@ Blockly.Xml.domToWorkspace = function(workspace, xml) {
       }
     }
   }
-  // Set blockscad version back to current tool version
+  // Set blockscad version back to current tool version now that the input file is done
   Blockscad.inputVersion = Blockscad.version;
   // console.log("resetting inputversion to current: ",Blockscad.inputVersion);
 };