Enable developers to click on UI to find the addComponent call/line in source code

[Sami Ekblad]

To debug applications that have complex UI it is currently hard to find the Java source code that constructs it.

To help developers find the relevant source code line a generic debug feature into addComponent is suggested:

• Application debug mode
• Find out the code calling the addComponent function in a ComponentContainer?
• Add a button (or similar) to component/windget UI that developer can select it
• When selected, output the formatted src line into stdout, so that Eclipse creates an active link out of it
• Developers can then click the button and and the line in console output to find the code that added the component

[Marc Englund]

I recall having a working prototype of this at some point... Some thoughts: - stack trace needed - both component instantiation and addComponent() stack traces would be nice

[Jani Laakso]

This is quite straightforward to implement, code like below could be called for each instantiation code for every component:

StackTraceElement[] st = new Throwable().fillInStackTrace()
                .getStackTrace();
        try {
            String key = "";
            // Class fromCallerClass = Class.forName(st[4].getClassName());
            // String fromMethodName = st[4].getMethodName();
            // Class callerClass = Class.forName(st[3].getClassName());
            String methodName = st[3].getMethodName();
            int line = st[3].getLineNumber();

            String clazz = st[3].getClassName() + ".java";
            // String clazz = st[3].getClassName().substring(
            // st[3].getClassName().lastIndexOf('.') + 1)
            // + ".java";
            key = "(" + clazz + ":" + line + ")" + " " + methodName;
            Integer value = (Integer) classMethodCallCounter.get(key);
            if (value == null)
                value = new Integer(1);
            else
                value = new Integer(value.intValue() + 1);
            classMethodCallCounter.put(key, value);
            return value.intValue() + ": " + key;
        } catch (Exception e) {
            return "unknown class.method";
        }

[Jani Laakso]

Eclipse automatically creates links to source code when using specific format to standard streams (err/out);