UIUtil.java

/*
 * Copyright (C) 2007-2013 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.android.util;

import java.util.LinkedList;
import java.util.Queue;

import org.geometerplus.zlibrary.core.resources.ZLResource;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.widget.Toast;

import com.yamin.reader.view.LoadingDialog;

public abstract class UIUtil {
	private static final Object ourMonitor = new Object();
	private static ProgressDialog ourProgress;
	private static LoadingDialog loadDialog = null;

	private static class Pair {
		final Runnable Action;
		final String Message;

		Pair(Runnable action, String message) {
			Action = action;
			Message = message;
		}
	};

	private static final Queue<Pair> ourTaskQueue = new LinkedList<Pair>();
	private static volatile Handler ourProgressHandler;

	private static boolean init() {
		if (ourProgressHandler != null) {
			return true;
		}
		try {
			ourProgressHandler = new Handler() {
				public void handleMessage(Message message) {
					try {
						synchronized (ourMonitor) {
							if (ourTaskQueue.isEmpty()) {
								ourProgress.dismiss();
								ourProgress = null;
							} else {
								ourProgress
										.setMessage(ourTaskQueue.peek().Message);
							}
							ourMonitor.notify();
						}
					} catch (Exception e) {
					}
				}
			};
			return true;
		} catch (Throwable t) {
			t.printStackTrace();
			return false;
		}
	}

	public static void wait(String key, Runnable action, Context context) {
		if (!init()) {
			action.run();
			return;
		}

		synchronized (ourMonitor) {
			final String message = ZLResource.resource("dialog")
					.getResource("waitMessage").getResource(key).getValue();
			ourTaskQueue.offer(new Pair(action, message));
			if (ourProgress == null) {
				ourProgress = ProgressDialog.show(context, null, "请等待,搜索中...", true,
						false);
			} else {
				return;
			}
		}
		final ProgressDialog currentProgress = ourProgress;
		new Thread(new Runnable() {
			public void run() {
				while ((ourProgress == currentProgress)
						&& !ourTaskQueue.isEmpty()) {
					Pair p = ourTaskQueue.poll();
					p.Action.run();
					synchronized (ourMonitor) {
						ourProgressHandler.sendEmptyMessage(0);
						try {
							ourMonitor.wait();
						} catch (InterruptedException e) {
						}
					}
				}
			}
		}).start();
	}

	public static void runWithMessage(final Activity activity, String key,
			final Runnable action, final Runnable postAction,
			final boolean minPriority) {
		// final String message =
		// ZLResource.resource("dialog").getResource("waitMessage").getResource(key).getValue();
		activity.runOnUiThread(new Runnable() {
			public void run() {
				// final ProgressDialog progress = ProgressDialog.show(activity,
				// null, "请稍后...加载中", true, false);
				showLoading(activity, "请稍后...加载中");
				final Thread runner = new Thread() {
					public void run() {
						action.run();
						activity.runOnUiThread(new Runnable() {
							public void run() {
								try {
									// progress.dismiss();
									stopLoading();
								} catch (Exception e) {
									e.printStackTrace();
								}
								if (postAction != null) {
									postAction.run();
								}
							}
						});
					}
				};
				if (minPriority) {
					runner.setPriority(Thread.MIN_PRIORITY);
				}
				runner.start();
			}
		});
	}

	/*
	 * modify by yamin.cao
	 */
	public static void showLoading(Activity activity, String msg) {
		if (loadDialog == null) {
			loadDialog = LoadingDialog.createDialog(activity, msg);
			loadDialog.setCanceledOnTouchOutside(false);
		}
		loadDialog.show();
	}

	private static void stopLoading() {
		if (loadDialog != null) {
			loadDialog.dismiss();
			loadDialog = null;
		}
	}

	public static void showMessageText(Context context, String text) {
		Toast.makeText(context, text, Toast.LENGTH_SHORT).show();
	}

	public static void showErrorMessage(Context context, String resourceKey) {
		showMessageText(context, ZLResource.resource("errorMessage")
				.getResource(resourceKey).getValue());
	}

	public static void showErrorMessage(Context context, String resourceKey,
			String parameter) {
		showMessageText(context, ZLResource.resource("errorMessage")
				.getResource(resourceKey).getValue().replace("%s", parameter));
	}
}