MouseObservable.java example

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/*
 * Copyright (c) 2011, grossmann
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 *   derived from this software without specific prior written permission.
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package org.jowidgets.spi.impl.controller;

import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Set;

import org.jowidgets.common.types.Modifier;
import org.jowidgets.common.types.MouseButton;
import org.jowidgets.common.types.Position;
import org.jowidgets.common.widgets.controller.IMouseButtonEvent;
import org.jowidgets.common.widgets.controller.IMouseEvent;
import org.jowidgets.common.widgets.controller.IMouseListener;
import org.jowidgets.common.widgets.controller.IMouseObservable;
import org.jowidgets.util.Assert;

public class MouseObservable implements IMouseObservable {

    private final Set<IMouseListener> listeners;

    public MouseObservable() {
        this.listeners = new LinkedHashSet<IMouseListener>();
    }

    @Override
    public final void addMouseListener(final IMouseListener listener) {
        Assert.paramNotNull(listener, "listener");
        this.listeners.add(listener);
    }

    @Override
    public final void removeMouseListener(final IMouseListener listener) {
        Assert.paramNotNull(listener, "listener");
        this.listeners.remove(listener);
    }

    public final void fireMousePressed(final Position position, final MouseButton mouseButton, final Set<Modifier> modifiers) {
        fireMousePressed(new MouseButtonEvent(position, mouseButton, modifiers));
    }

    public final void fireMouseReleased(final Position position, final MouseButton mouseButton, final Set<Modifier> modifiers) {
        fireMouseReleased(new MouseButtonEvent(position, mouseButton, modifiers));
    }

    public final void fireMouseDoubleClicked(final Position position, final MouseButton mouseButton, final Set<Modifier> modifiers) {
        fireMouseDoubleClicked(new MouseButtonEvent(position, mouseButton, modifiers));
    }

    public final void fireMouseEnter(final Position position) {
        fireMouseEnter(new MouseEvent(position));
    }

    public final void fireMouseExit(final Position position) {
        fireMouseExit(new MouseEvent(position));
    }

    public final void fireMousePressed(final IMouseButtonEvent mouseEvent) {
        for (final IMouseListener listener : new LinkedList<IMouseListener>(listeners)) {
            listener.mousePressed(mouseEvent);
        }
    }

    public final void fireMouseReleased(final IMouseButtonEvent mouseEvent) {
        for (final IMouseListener listener : new LinkedList<IMouseListener>(listeners)) {
            listener.mouseReleased(mouseEvent);
        }
    }

    public final void fireMouseDoubleClicked(final IMouseButtonEvent mouseEvent) {
        for (final IMouseListener listener : new LinkedList<IMouseListener>(listeners)) {
            listener.mouseDoubleClicked(mouseEvent);
        }
    }

    public final void fireMouseEnter(final IMouseEvent mouseEvent) {
        for (final IMouseListener listener : new LinkedList<IMouseListener>(listeners)) {
            listener.mouseEnter(mouseEvent);
        }
    }

    public final void fireMouseExit(final IMouseEvent mouseEvent) {
        for (final IMouseListener listener : new LinkedList<IMouseListener>(listeners)) {
            listener.mouseExit(mouseEvent);
        }
    }

}