/**********************************************************************
Copyright (c) 2000, 2002 IBM Corp. and others.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html

Contributors:
    IBM Corporation - Initial implementation
    Vicente Fernando - www.alfersoft.com.ar
**********************************************************************/
package net.sourceforge.phpdt.internal.debug.core.model;

import org.eclipse.core.runtime.Platform;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.debug.core.model.IVariable;

public class PHPVariable implements IVariable {

	private boolean isBoolean;
	private boolean isString;
	private boolean isResource;
    private boolean isObject;
    private boolean isLocal;
    private PHPStackFrame stackFrame;
    private String name;
    private String objectId;
	private String className;
    private PHPValue value;
    private PHPVariable parent;

    public PHPVariable(PHPStackFrame stackFrame, String name, String scope) {
        this.initialize(stackFrame, name, scope, null, new PHPValue(this), "", "string");
    }

    public PHPVariable(PHPStackFrame stackFrame, String name, String scope, String value, String type, boolean hasChildren, String objectId, String className) {
        this.initialize(stackFrame, name, scope, objectId, new PHPValue(this, value, type, hasChildren), className, type);
    }

	public PHPVariable(PHPStackFrame stackFrame, String name, String scope, boolean isRef, PHPValue varPHP) {
		if(isRef)
			this.initialize(stackFrame, name, scope, "-1", varPHP, "", "string");
		else
			this.initialize(stackFrame, name, scope, "-1", new PHPValue(this), "", "string");
	}

    protected final void initialize(PHPStackFrame stackFrame, String name, String scope, String objectId, PHPValue value, String className, String typeName) {
        this.stackFrame = stackFrame;
        this.value = value;
        this.name = name;
        this.objectId = objectId;
        // scope
		this.isLocal = scope.equals("local");
		// type
		this.isObject = typeName.equals("object");
		this.isResource = typeName.equals("resource");
		this.isBoolean = typeName.equals("boolean");
		this.isString = typeName.equals("string");
		
        this.className = className;
    }

    /**
     * @see org.eclipse.debug.core.model.IVariable#getValue()
     */
    public IValue getValue() {
        return value;
    }

    /**
     * @see org.eclipse.debug.core.model.IVariable#getName()
     */
    public String getName() {
        return name;
    }

    /**
     * @see org.eclipse.debug.core.model.IVariable#getReferenceTypeName()
     */
    public String getReferenceTypeName() {
        return "RefTypeName";
    }

    /**
     * @see org.eclipse.debug.core.model.IVariable#hasValueChanged()
     */
    public boolean hasValueChanged() throws DebugException {
        return false;
    }

    /**
     * @see org.eclipse.debug.core.model.IDebugElement#getModelIdentifier()
     */
    public String getModelIdentifier() {
        return this.getDebugTarget().getModelIdentifier();
    }

    /**
     * @see org.eclipse.debug.core.model.IDebugElement#getDebugTarget()
     */
    public IDebugTarget getDebugTarget() {
        return stackFrame.getDebugTarget();
    }

    /**
     * @see org.eclipse.debug.core.model.IDebugElement#getLaunch()
     */
    public ILaunch getLaunch() {
        return this.getDebugTarget().getLaunch();
    }

    /**
     * @see org.eclipse.debug.core.model.IValueModification#setValue(String)
     */
    public void setValue(String expression) throws DebugException {
    }

    /**
     * @see org.eclipse.debug.core.model.IValueModification#setValue(IValue)
     */
    public void setValue(IValue value) throws DebugException {
    }

    /**
     * @see org.eclipse.debug.core.model.IValueModification#supportsValueModification()
     */
    public boolean supportsValueModification() {
        return false;
    }

    /**
     * @see org.eclipse.debug.core.model.IValueModification#verifyValue(String)
     */
    public boolean verifyValue(String expression) throws DebugException {
        return false;
    }

    /**
     * @see org.eclipse.debug.core.model.IValueModification#verifyValue(IValue)
     */
    public boolean verifyValue(IValue value) throws DebugException {
        return false;
    }

    /**
     * @see org.eclipse.core.runtime.IAdaptable#getAdapter(Class)
     */
    public Object getAdapter(Class adapter) {
        return Platform.getAdapterManager().getAdapter(this, adapter);
    }

    public String toString() {
    	
		if(this.isObject()) {
			return this.getName() + " [class: " + this.getClassName() + "]";
		} else if(this.isResource()) {
			return this.getName() + " [resource: " + this.getClassName() + "] = " + ((PHPValue) this.getValue());
		} else if (this.isHashValue()) {
        	int elements= Integer.parseInt(((PHPValue) this.getValue()).getValueString());
        	switch (elements) {
        		case 0:
					return this.getName() + " [no elements]";
				case 1:
					return this.getName() + " [1 element]";
				default:
					return this.getName() + " [" + elements + " elements]";
        	}
        } else {
			return this.getName() + " = " + ((PHPValue) this.getValue());
        }

    }

    public PHPStackFrame getStackFrame() {
        return stackFrame;
    }

    public PHPVariable getParent() {
        return parent;
    }

    public void setParent(PHPVariable parent) {
        this.parent = parent;
    }

    public String getQualifiedName() {
        return this.getName();
    }

	public boolean isBoolean() {
		return isBoolean;
	}

	public boolean isResource() {
		return isResource;
	}
	
	public boolean isString() {
		return isString;
	}

    public boolean isLocal() {
        return isLocal;
    }

    public boolean isObject() {
        return isObject;
    }

    public String getObjectId() {
        return objectId;
    }

    public boolean isHashValue() {
        try {
			return ((PHPValue) this.getValue()).hasVariables();
        } catch (DebugException e) {
			return false; 
        }
    }

	public String getClassName() {
		return className;
	}
}