firstcharaction.java

来自「Python Development Environment (Python I」· Java 代码 · 共 33 行

package org.python.pydev.editor.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.ui.texteditor.ITextEditor;

/**
 * @author Fabio Zadrozny 
 */
public class FirstCharAction extends PyAction {
  
  /**
   * Run to the first char (other than whitespaces) or to the real first char. 
   */
  public void run(IAction action) {
	
	try{
	    ITextEditor textEditor = getTextEditor();
	    IDocument doc = textEditor.getDocumentProvider().getDocument(textEditor.getEditorInput());
	    ITextSelection selection = (ITextSelection)textEditor.getSelectionProvider().getSelection();
	    
		boolean isAtFirstChar = isAtFirstVisibleChar(doc, selection.getOffset());
	    if (! isAtFirstChar){
			gotoFirstVisibleChar(doc, selection.getOffset());
	    }else{
			gotoFirstChar(doc, selection.getOffset());
	    }
	}catch(Exception e){
		beep(e);
	}
  }
}