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Can't add preset comment while define a new block #83

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?

We can use this.setOutput, this.setTooltip to create a language block, such as 

{{{
Blockly.Language.variables_get = {
  // Variable getter.
  category: null,  // Variables are handled specially.
  helpUrl: Blockly.LANG_VARIABLES_GET_HELPURL,
  init: function() {
    this.setColour(330);
    this.appendDummyInput("")
        .appendTitle(Blockly.LANG_VARIABLES_GET_TITLE_1)
        .appendTitle(new Blockly.FieldVariable(
        Blockly.LANG_VARIABLES_GET_ITEM), 'VAR');
    this.setOutput(true, null);
    this.setTooltip(Blockly.LANG_VARIABLES_GET_TOOLTIP_1);
}}}

but add additional this.setCommentText("some text"); statement(that also 
defined in block.js) will cause

 'Uncaught TypeError: Cannot call method 'appendChild' of null '

error in comment.js with line:

 'this.block_.getSvgRoot().appendChild(this.iconGroup_);' 

Seems the object is not properly referenced.

What is the expected output? What do you see instead?

Able to add preset comment while define a new block.

Original issue reported on code.google.com by gasolin on 22 Oct 2012 at 2:27

GoogleCodeExporter commented 8 years ago

Original comment by gasolin on 22 Oct 2012 at 7:22

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
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Original comment by wenglipi...@gmail.com on 25 Apr 2015 at 12:25