/*******************************************************************************
 * Copyright (c) 2016 Ericsson and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.eclipse.cdt.dsf.gdb.internal.ui.console;

import java.io.OutputStream;

import org.eclipse.cdt.utils.pty.PTY;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.tm.internal.terminal.provisional.api.ISettingsStore;
import org.eclipse.tm.internal.terminal.provisional.api.ITerminalConnector;
import org.eclipse.tm.internal.terminal.provisional.api.ITerminalControl;
import org.eclipse.tm.internal.terminal.provisional.api.TerminalState;

/**
 * Class that connects the GDB process I/O with the terminal.
 */
public class GdbTerminalPageConnector extends PlatformObject implements ITerminalConnector {

    private int fTerminalWidth, fTerminalHeight;
    private ITerminalControl fControl;
    private final PTY fPty;
    private final IGdbTerminalControlConnector fGdbTerminalCtrlConnector;

    public GdbTerminalPageConnector(IGdbTerminalControlConnector gdbTerminalCtrlConnector, PTY pty) {
    	fPty = pty;
    	fGdbTerminalCtrlConnector = gdbTerminalCtrlConnector;
	}
	
    @Override
	public void disconnect() {
    	fGdbTerminalCtrlConnector.removePageTerminalControl(fControl);

    	if (fControl != null) {
    		fControl.setState(TerminalState.CLOSED);
    	}
    }

	@Override
	public OutputStream getTerminalToRemoteStream() {
		return fGdbTerminalCtrlConnector.getTerminalToRemoteStream();
	}

	@Override
	public void connect(ITerminalControl control) {
    	if (control == null) {
    		throw new IllegalArgumentException("Invalid ITerminalControl"); //$NON-NLS-1$
    	}

		fControl = control;
		fGdbTerminalCtrlConnector.addPageTerminalControl(fControl);

		// Set the terminal control state to CONNECTED
		fControl.setState(TerminalState.CONNECTED);
	}


    @Override
    public void setTerminalSize(int newWidth, int newHeight) {
    	if (newWidth != fTerminalWidth || newHeight != fTerminalHeight) {
    		fTerminalWidth = newWidth;
    		fTerminalHeight = newHeight;
    		if (fPty != null) {
    			fPty.setTerminalSize(newWidth, newHeight);
    		}
    	}
    }

    @Override
    public String getId() {
    	// No need for an id, as we're are just used locally
    	return null;
    }

    @Override
    public String getName() {
    	// No name
    	return null;
    }

    @Override
    public boolean isHidden() {
    	// in case we do leak into the TM world, we shouldn't be visible
    	return true;
    }

    @Override
    public boolean isInitialized() {
    	return true;
    }

    @Override
    public String getInitializationErrorMessage() {
    	return null;
    }

    @Override
    public boolean isLocalEcho() {
    	return false;
    }

    @Override
    public void setDefaultSettings() {
    	// we don't do settings
    }

    @Override
    public String getSettingsSummary() {
    	// we don't do settings
    	return null;
    }

    @Override
    public void load(ISettingsStore arg0) {
    	// we don't do settings
    }

    @Override
    public void save(ISettingsStore arg0) {
    	// we don't do settings
    }
}