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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * busy status manager | ||
| * | ||
| * License : The MIT License | ||
| * Copyright(c) 2020 olyutorskii | ||
| */ | ||
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| package jp.sfjp.jindolf; | ||
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| import java.awt.EventQueue; | ||
| import java.lang.reflect.InvocationTargetException; | ||
| import java.util.concurrent.Executor; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.logging.Level; | ||
| import java.util.logging.Logger; | ||
| import jp.sfjp.jindolf.view.TopFrame; | ||
| import jp.sfjp.jindolf.view.TopView; | ||
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| /** | ||
| * ビジー状態の見た目を管理する。 | ||
| * | ||
| * <p>ビジー状態を伴うタスクの管理も行う。 | ||
| * | ||
| * <p>EDTで処理しきれない長時間タスクを実行している状況、 | ||
| * およびその間のGUI操作が抑止される期間をビジーと呼ぶ。 | ||
| */ | ||
| public class BusyStatus { | ||
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| private static final Logger LOGGER = Logger.getAnonymousLogger(); | ||
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| private final TopFrame topFrame; | ||
| private final Executor executor = Executors.newCachedThreadPool(); | ||
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| private boolean isBusy = false; | ||
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| /** | ||
| * コンストラクタ。 | ||
| * | ||
| * @param topFrame TopFrameインスタンス | ||
| */ | ||
| public BusyStatus(TopFrame topFrame){ | ||
| super(); | ||
| this.topFrame = topFrame; | ||
| return; | ||
| } | ||
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| /** | ||
| * ビジー状態か否か返す。 | ||
| * | ||
| * @return ビジーならtrue | ||
| */ | ||
| public boolean isBusy(){ | ||
| return this.isBusy; | ||
| } | ||
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| /** | ||
| * ビジー状態を設定する。 | ||
| * | ||
| * <p>ヘビーなタスク実行をアピールするために、 | ||
| * プログレスバーとカーソルの設定を行う。 | ||
| * | ||
| * <p>ビジー中のトップフレームのマウス操作、キーボード入力は | ||
| * 全てグラブされるため無視される。 | ||
| * | ||
| * @param flag trueならプログレスバーのアニメ開始&WAITカーソル。 | ||
| * falseなら停止&通常カーソル。 | ||
| * @param msg フッタメッセージ。nullなら変更なし。 | ||
| */ | ||
| public void setBusy(boolean flag, String msg){ | ||
| if(EventQueue.isDispatchThread()){ | ||
| setBusyEdt(flag, msg); | ||
| return; | ||
| } | ||
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| try{ | ||
| EventQueue.invokeAndWait(() -> { | ||
| setBusyEdt(flag, msg); | ||
| }); | ||
| }catch(InterruptedException | InvocationTargetException e){ | ||
| LOGGER.log(Level.SEVERE, "ビジー処理で失敗", e); | ||
| } | ||
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| return; | ||
| } | ||
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| /** | ||
| * ビジー状態を設定する。 | ||
| * | ||
| * <p>原則EDTから呼ばねばならない。 | ||
| * | ||
| * @param flag trueならビジー | ||
| * @param msg メッセージ。nullなら変更なし。 | ||
| */ | ||
| public void setBusyEdt(boolean flag, String msg){ | ||
| assert EventQueue.isDispatchThread(); | ||
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| this.isBusy = flag; | ||
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| this.topFrame.setBusy(this.isBusy); | ||
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| if(msg != null){ | ||
| TopView topView = this.topFrame.getTopView(); | ||
| topView.updateSysMessage(msg); | ||
| } | ||
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| return; | ||
| } | ||
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| /** | ||
| * 軽量タスクをEDTで実行する。 | ||
| * | ||
| * <p>タスク実行中はビジー状態となる。 | ||
| * | ||
| * <p>軽量タスク実行中はイベントループが停止するので、 | ||
| * 入出力待ちを伴わなずに早急に終わるタスクでなければならない。 | ||
| * | ||
| * @param task 軽量タスク | ||
| * @param beforeMsg ビジー中ステータス文字列 | ||
| * @param afterMsg ビジー復帰時のステータス文字列 | ||
| */ | ||
| public void submitLightBusyTask(Runnable task, | ||
| String beforeMsg, | ||
| String afterMsg ){ | ||
| EventQueue.invokeLater(() -> { | ||
| setBusy(true, beforeMsg); | ||
| }); | ||
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| EventQueue.invokeLater(task); | ||
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| EventQueue.invokeLater(() -> { | ||
| setBusy(false, afterMsg); | ||
| }); | ||
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| return; | ||
| } | ||
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| /** | ||
| * 重量級タスクをEDTとは別のスレッドで実行する。 | ||
| * | ||
| * <p>タスク実行中はビジー状態となる。 | ||
| * | ||
| * @param heavyTask 重量級タスク | ||
| * @param beforeMsg ビジー中ステータス文字列 | ||
| * @param afterMsg ビジー復帰時のステータス文字列 | ||
| */ | ||
| public void submitHeavyBusyTask(final Runnable heavyTask, | ||
| final String beforeMsg, | ||
| final String afterMsg ){ | ||
| setBusy(true, beforeMsg); | ||
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| EventQueue.invokeLater(() -> { | ||
| fork(() -> { | ||
| try{ | ||
| heavyTask.run(); | ||
| }finally{ | ||
| setBusy(false, afterMsg); | ||
| } | ||
| }); | ||
| }); | ||
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| return; | ||
| } | ||
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| /** | ||
| * スレッドプールを用いて非EDTなタスクを投入する。 | ||
| * | ||
| * @param task タスク | ||
| */ | ||
| private void fork(Runnable task){ | ||
| this.executor.execute(task); | ||
| return; | ||
| } | ||
|
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| } |
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