Ray Greenwell
79c6427c21
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4191 542714f4-19e9-0310-aa3c-eee0fc999fb1
103 lines
3.7 KiB
Java
103 lines
3.7 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.crowd.client;
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import java.awt.Container;
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import com.threerings.crowd.Log;
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import com.threerings.crowd.data.PlaceObject;
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/**
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* Provides a mechanism for dispatching notifications to all user
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* interface elements in a hierarchy that implement the {@link PlaceView}
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* interface. Look at the documentation for {@link PlaceView} for more
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* explanation.
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*/
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public class PlaceViewUtil
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{
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/**
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* Dispatches a call to {@link PlaceView#willEnterPlace} to all UI
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* elements in the hierarchy rooted at the component provided via the
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* <code>root</code> parameter.
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*
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* @param root the component at which to start traversing the UI
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* hierarchy.
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* @param plobj the place object that is about to be entered.
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*/
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public static void dispatchWillEnterPlace (
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Object root, PlaceObject plobj)
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{
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// dispatch the call on this component if it implements PlaceView
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if (root instanceof PlaceView) {
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try {
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((PlaceView)root).willEnterPlace(plobj);
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} catch (Exception e) {
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Log.warning("Component choked on willEnterPlace() " +
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"[component=" + root + ", plobj=" + plobj + "].");
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Log.logStackTrace(e);
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}
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}
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// now traverse all of this component's children
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if (root instanceof Container) {
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Container cont = (Container)root;
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int ccount = cont.getComponentCount();
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for (int i = 0; i < ccount; i++) {
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dispatchWillEnterPlace(cont.getComponent(i), plobj);
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}
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}
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}
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/**
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* Dispatches a call to {@link PlaceView#didLeavePlace} to all UI
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* elements in the hierarchy rooted at the component provided via the
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* <code>root</code> parameter.
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*
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* @param root the component at which to start traversing the UI
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* hierarchy.
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* @param plobj the place object that is about to be entered.
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*/
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public static void dispatchDidLeavePlace (
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Object root, PlaceObject plobj)
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{
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// dispatch the call on this component if it implements PlaceView
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if (root instanceof PlaceView) {
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try {
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((PlaceView)root).didLeavePlace(plobj);
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} catch (Exception e) {
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Log.warning("Component choked on didLeavePlace() " +
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"[component=" + root + ", plobj=" + plobj + "].");
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Log.logStackTrace(e);
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}
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}
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// now traverse all of this component's children
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if (root instanceof Container) {
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Container cont = (Container)root;
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int ccount = cont.getComponentCount();
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for (int i = 0; i < ccount; i++) {
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dispatchDidLeavePlace(cont.getComponent(i), plobj);
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}
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}
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}
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}
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