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package org.netbeans.api.debugger.jpda;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import com.sun.jdi.request.StepRequest;
/**
* Represents one JPDA step.
*
* @author Roman Ondruska
*/
public abstract class JPDAStep {
private int size;
private int depth;
private boolean hidden;
/** Associated JPDA debugger */
protected JPDADebugger debugger;
private PropertyChangeSupport pcs;
/** Step into any newly pushed frames */
public static final int STEP_INTO = StepRequest.STEP_INTO;
/** Step over any newly pushed frames */
public static final int STEP_OVER = StepRequest.STEP_OVER;
/** Step out of the current frame */
public static final int STEP_OUT = StepRequest.STEP_OUT;
/** Step to the next location on a different line */
public static final int STEP_LINE = StepRequest.STEP_LINE;
/** Step to the next available operation */
public static final int STEP_OPERATION = 10;
/** Step to the next available location */
public static final int STEP_MIN = StepRequest.STEP_MIN;
/** Property fired when the step is executed */
public static final String PROP_STATE_EXEC = "exec";
/** Constructs a JPDAStep for given {@link org.netbeans.api.debugger.jpda.JPDADebugger},
* size {@link #STEP_LINE}, {@link #STEP_MIN}
* and depth {@link #STEP_OUT}, {@link #STEP_INTO}.
*
* @param debugger an associated JPDADebuger
* @param size step size
* @param depth step depth
*/
public JPDAStep(JPDADebugger debugger, int size, int depth) {
this.size = size;
this.depth = depth;
this.debugger = debugger;
this.hidden = false;
pcs = new PropertyChangeSupport(this);
}
/** Sets the hidden property. */
public void setHidden(boolean hidden) {
this.hidden = hidden;
}
/**
* Returns hidden property of the step.
*
* @return hidden property
*/
public boolean getHidden() {
return hidden;
}
/** Sets size of the step.
* @param size step size
*/
public void setSize(int size) {
this.size = size;
}
/**
* Returns size of the step.
*
* @return step size
*/
public int getSize() {
return size;
}
/** Sets depth of the step.
* @param depth step depth
*/
public void setDepth(int depth) {
this.depth = depth;
}
/**
* Returns depth of the step.
*
* @return step depth
*/
public int getDepth() {
return depth;
}
/** Adds the step request to the associated
* {@link org.netbeans.api.debugger.jpda.JPDADebugger}.
* Method is not synchronized.
*
* @param tr associated thread
*/
public abstract void addStep(JPDAThread tr);
/**
* Adds property change listener.
*
* @param l new listener.
*/
public void addPropertyChangeListener (PropertyChangeListener l) {
pcs.addPropertyChangeListener (l);
}
/**
* Removes property change listener.
*
* @param l removed listener.
*/
public void removePropertyChangeListener (PropertyChangeListener l) {
pcs.removePropertyChangeListener (l);
}
/**
* Adds property change listener.
*
* @param l new listener.
*/
public void addPropertyChangeListener (String propertyName, PropertyChangeListener l) {
pcs.addPropertyChangeListener (propertyName, l);
}
/**
* Removes property change listener.
*
* @param l removed listener.
*/
public void removePropertyChangeListener (String propertyName, PropertyChangeListener l) {
pcs.removePropertyChangeListener (propertyName, l);
}
/**
* Fires property change.
*/
protected void firePropertyChange (String name, Object o, Object n) {
pcs.firePropertyChange (name, o, n);
}
}
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