How to customize the AlloyEditor hyperlink dropdown list?

Issue

• Business needs may sometimes require to customize the AlloyEditor hyperlink dropdown list in the AlloyEditor toolbar:
  
  

Environment

• Liferay DXP 7.2

Resolution

You can provide additional configuration to the link dropdown list. The best approach to do it is creating an EditorConfigContributor passing the buttonCfg:

  buttonCfg: {
    'linkEdit': {
      allowedTargets: [
        {
          label: AlloyEditor.Strings.linkTargetDefault,
          value: ''
        }, {
          label: AlloyEditor.Strings.linkTargetBlank,
          value: '_blank'
        }
      ]
    }

This is somehow similar to what we are already doing in AlloyEditorCreoleEditorConfigContributor.java. So in the end, the cleanest solution is just adding below code into populateConfigJSONObject method:

JSONArray allowedTargetsJSONObject = JSONUtil.putAll(
    JSONUtil.put("label","_self (same tab)").put("value","_self"),
    JSONUtil.put("label","_blank (new tab)").put("value","_blank")
);
​
JSONObject linkEditJSONObject = JSONUtil.put(
    "allowedTargets", allowedTargetsJSONObject
);
​
JSONObject buttonCfgJSONObject = JSONUtil.put(
    "linkEdit", linkEditJSONObject);
jsonObject.put(
    "buttonCfg", buttonCfgJSONObject
);

Attached, a small plugin demonstrating the new behavior.