Package org.stringtemplate.v4.gui

Source Code of org.stringtemplate.v4.gui.JTreeSTModel

/*
* [The "BSD license"]
*  Copyright (c) 2011 Terence Parr
*  All rights reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*  1. Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*  2. Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*  3. The name of the author may not be used to endorse or promote products
*     derived from this software without specific prior written permission.
*
*  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
*  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
*  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
*  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
*  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
*  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
*  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
*  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.stringtemplate.v4.gui;

import org.stringtemplate.v4.Interpreter;
import org.stringtemplate.v4.ST;
import org.stringtemplate.v4.StringRenderer;
import org.stringtemplate.v4.debug.EvalTemplateEvent;

import javax.swing.event.TreeModelListener;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;

public class JTreeSTModel implements TreeModel {
  public Interpreter interp;
  public Wrapper root;

  public static class Wrapper {
    EvalTemplateEvent event;
    public Wrapper(EvalTemplateEvent event) { this.event = event; }

    @Override
    public int hashCode() {
      return event.hashCode();
    }

    @Override
    public boolean equals(Object o) {
      //System.out.println(event+"=="+((Wrapper)o).event+" is "+(this.event == ((Wrapper)o).event));
      return this.event == ((Wrapper)o).event;
    }

    @Override
    public String toString() {
      ST st = event.scope.st;
      if ( st.isAnonSubtemplate() ) return "{...}";
      if ( st.debugState!=null && st.debugState.newSTEvent!=null ) {
        String label = st.toString()+" @ "+st.debugState.newSTEvent.getFileName()+":"+
             st.debugState.newSTEvent.getLine();
        return "<html><b>" + StringRenderer.escapeHTML(label) + "</b></html>";
      }
      else {
        return st.toString();
      }
    }
  }

  public JTreeSTModel(Interpreter interp, EvalTemplateEvent root) {
    this.interp = interp;
    this.root = new Wrapper(root);
  }

  @Override
  public Object getChild(Object parent, int index) {
    EvalTemplateEvent e = ((Wrapper)parent).event;
    return new Wrapper(e.scope.childEvalTemplateEvents.get(index));
  }

  @Override
  public int getChildCount(Object parent) {
    EvalTemplateEvent e = ((Wrapper)parent).event;
    return e.scope.childEvalTemplateEvents.size();
  }

  @Override
  public int getIndexOfChild(Object parent, Object child) {
    EvalTemplateEvent p = ((Wrapper)parent).event;
    EvalTemplateEvent c = ((Wrapper)parent).event;
        int i = 0;
        for (EvalTemplateEvent e : p.scope.childEvalTemplateEvents) {
            if ( e.scope.st == c.scope.st ) {
//        System.out.println(i);
//        System.out.println("found "+e.self+" as child of "+parentST);
        return i;
      }
            i++;
        }
    return -1;
  }

  @Override
  public boolean isLeaf(Object node) {
    return getChildCount(node) == 0;
  }

  @Override
  public Object getRoot() { return root; }

  @Override
    public void valueForPathChanged(TreePath treePath, Object o) {
    }

  @Override
    public void addTreeModelListener(TreeModelListener treeModelListener) {
    }

  @Override
    public void removeTreeModelListener(TreeModelListener treeModelListener) {
    }
}
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