1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.sdklib.internal.repository; 18 19 20 /** 21 * A monitor interface for a {@link ITask}. 22 * <p/> 23 * Depending on the task factory that created the task, there might not be any UI 24 * or it might not implement all the methods, in which case calling them would be 25 * a no-op but is guaranteed not to crash. 26 * <p/> 27 * If the task runs in a non-UI worker thread, the task factory implementation 28 * will take care of the update the UI in the correct thread. The task itself 29 * must not have to deal with it. 30 */ 31 public interface ITaskMonitor { 32 33 /** 34 * Sets the description in the current task dialog. 35 * This method can be invoked from a non-UI thread. 36 */ 37 public void setDescription(String descriptionFormat, Object...args); 38 39 /** 40 * Sets the result text in the current task dialog. 41 * This method can be invoked from a non-UI thread. 42 */ 43 public void setResult(String resultFormat, Object...args); 44 45 /** 46 * Sets the max value of the progress bar. 47 * This method can be invoked from a non-UI thread. 48 * 49 * This method MUST be invoked once before using {@link #incProgress(int)} or 50 * {@link #getProgress()} or {@link #createSubMonitor(int)}. Callers are 51 * discouraged from using more than once -- implementations can either discard 52 * the next calls or behave incoherently. 53 */ 54 public void setProgressMax(int max); 55 56 /** 57 * Increments the current value of the progress bar. 58 * This method can be invoked from a non-UI thread. 59 * 60 * Callers MUST use setProgressMax before using this method. 61 */ 62 public void incProgress(int delta); 63 64 /** 65 * Returns the current value of the progress bar, 66 * between 0 and up to {@link #setProgressMax(int)} - 1. 67 * 68 * Callers MUST use setProgressMax before using this method. 69 */ 70 public int getProgress(); 71 72 /** 73 * Returns true if the user requested to cancel the operation. 74 * It is up to the task thread to pool this and exit as soon 75 * as possible. 76 */ 77 public boolean isCancelRequested(); 78 79 /** 80 * Creates a sub-monitor that will use up to tickCount on the progress bar. 81 * tickCount must be 1 or more. 82 */ 83 public ITaskMonitor createSubMonitor(int tickCount); 84 85 /** 86 * Display a yes/no question dialog box. 87 * 88 * Implementations MUST allow this to be called from any thread, e.g. by 89 * making sure the dialog is opened synchronously in the ui thread. 90 * 91 * @param title The title of the dialog box 92 * @param message The error message 93 * @return true if YES was clicked. 94 */ 95 public boolean displayPrompt(final String title, final String message); 96 97 } 98
