1fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira/** 2fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * Copyright (c) 2011, Google Inc. 3fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * 4fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * Licensed under the Apache License, Version 2.0 (the "License"); 5fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * you may not use this file except in compliance with the License. 6fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * You may obtain a copy of the License at 7fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * 8fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * http://www.apache.org/licenses/LICENSE-2.0 9fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * 10fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * Unless required by applicable law or agreed to in writing, software 11fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * distributed under the License is distributed on an "AS IS" BASIS, 12fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * See the License for the specific language governing permissions and 14fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * limitations under the License. 15fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira */ 1630e2c24b056542f3b1b438aeb798305d1226d0c8Andy Huangpackage com.android.mail; 17fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 18fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereiraimport android.content.Context; 19fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereiraimport android.os.Handler; 20fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereiraimport android.util.AttributeSet; 21fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereiraimport android.view.View; 22fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereiraimport android.widget.ProgressBar; 23fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 24fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira/** 25fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * MinTimeProgressView implements a ProgressBar that waits MIN_DELAY ms to be 26fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * dismissed before showing. Once visible, the progress bar will be visible for 27fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * at least MIN_SHOW_TIME to avoid "flashes" in the UI when an event could take 28fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * a largely variable time to complete (from none, to a user perceivable amount) 29fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * 30fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira * @author mindyp 31fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira */ 32fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereirapublic class MinTimeProgressView extends ProgressBar { 33fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private static int sMinShowTime; 34fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 35fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private static int sMinDelay; 36fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 37fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private long mStartTime = -1; 38fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 39fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private final Handler mHandler = new Handler(); 40fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 41fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private boolean mDismissed = false; 42fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 43fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira public MinTimeProgressView(Context context) { 44fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira this(context, null); 45fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 46fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 47fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira public MinTimeProgressView(Context context, AttributeSet attrs) { 48fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira super(context, attrs, R.style.MinTimeProgressViewStyle); 49fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira sMinShowTime = context.getResources() 50fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira .getInteger(R.integer.html_conv_progress_display_time); 51fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira sMinDelay = context.getResources() 52fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira .getInteger(R.integer.html_conv_progress_wait_time); 53fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 54fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 55fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private final Runnable mDelayedHide = new Runnable() { 569e2d407fdafeb874e640eb84017feaf784309075Scott Kennedy @Override 57fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira public void run() { 58fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira MinTimeProgressView.super.setVisibility(View.GONE); 59fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 60fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira }; 61fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 62fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private final Runnable mDelayedShow = new Runnable() { 639e2d407fdafeb874e640eb84017feaf784309075Scott Kennedy @Override 64fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira public void run() { 65fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira if (!mDismissed) { 66fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira mStartTime = System.currentTimeMillis(); 67fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira MinTimeProgressView.super.setVisibility(View.VISIBLE); 68fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 69fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 70fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira }; 71fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 72fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private void hide() { 73fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira mDismissed = true; 74fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira long diff = System.currentTimeMillis() - mStartTime; 75fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira if (diff >= sMinShowTime || mStartTime == -1) { 76fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // The progress spinner has been shown long enough 77fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // OR was not shown yet. If it wasn't shown yet, 78fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // it will just never be shown. 79fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira MinTimeProgressView.super.setVisibility(View.GONE); 80fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } else { 81fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // The progress spinner is shown, but not long enough, 82fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // so put a delayed message in to hide it when its been 83fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // shown long enough. 84fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira mHandler.postDelayed(mDelayedHide, sMinShowTime - diff); 85fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 86fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 87fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 88fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira private void show() { 89fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // Reset the start time. 90fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira mStartTime = -1; 91fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira mHandler.postDelayed(mDelayedShow, sMinDelay); 92fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 93fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira 94fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira @Override 95fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira public void setVisibility(int visibility) { 96fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // Whenever the visibility gets changed, clear dismissed 97fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira // state. 98fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira mDismissed = false; 99fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira switch (visibility) { 100fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira case View.VISIBLE: 101fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira show(); 102fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira break; 103fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira case View.GONE: 104fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira hide(); 105fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira break; 106fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira default: 107fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira super.setVisibility(visibility); 108fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 109fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira } 110fdd984b69cabc5951eec269a23d42898ea70360fMindy Pereira} 111