327 lines
10 KiB
Java
327 lines
10 KiB
Java
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.app;
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import android.content.Context;
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import android.graphics.drawable.Drawable;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.text.Spannable;
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import android.text.SpannableString;
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import android.text.style.StyleSpan;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.widget.ProgressBar;
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import android.widget.TextView;
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import com.android.internal.R;
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import java.text.NumberFormat;
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/**
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* <p>A dialog showing a progress indicator and an optional text message or view.
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* Only a text message or a view can be used at the same time.</p>
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* <p>The dialog can be made cancelable on back key press.</p>
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* <p>The progress range is 0..10000.</p>
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*/
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public class ProgressDialog extends AlertDialog {
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/** Creates a ProgressDialog with a ciruclar, spinning progress
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* bar. This is the default.
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*/
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public static final int STYLE_SPINNER = 0;
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/** Creates a ProgressDialog with a horizontal progress bar.
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*/
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public static final int STYLE_HORIZONTAL = 1;
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private ProgressBar mProgress;
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private TextView mMessageView;
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private int mProgressStyle = STYLE_SPINNER;
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private TextView mProgressNumber;
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private String mProgressNumberFormat;
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private TextView mProgressPercent;
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private NumberFormat mProgressPercentFormat;
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private int mMax;
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private int mProgressVal;
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private int mSecondaryProgressVal;
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private int mIncrementBy;
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private int mIncrementSecondaryBy;
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private Drawable mProgressDrawable;
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private Drawable mIndeterminateDrawable;
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private CharSequence mMessage;
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private boolean mIndeterminate;
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private boolean mHasStarted;
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private Handler mViewUpdateHandler;
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public ProgressDialog(Context context) {
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this(context, com.android.internal.R.style.Theme_Dialog_Alert);
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}
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public ProgressDialog(Context context, int theme) {
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super(context, theme);
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}
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public static ProgressDialog show(Context context, CharSequence title,
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CharSequence message) {
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return show(context, title, message, false);
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}
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public static ProgressDialog show(Context context, CharSequence title,
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CharSequence message, boolean indeterminate) {
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return show(context, title, message, indeterminate, false, null);
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}
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public static ProgressDialog show(Context context, CharSequence title,
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CharSequence message, boolean indeterminate, boolean cancelable) {
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return show(context, title, message, indeterminate, cancelable, null);
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}
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public static ProgressDialog show(Context context, CharSequence title,
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CharSequence message, boolean indeterminate,
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boolean cancelable, OnCancelListener cancelListener) {
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ProgressDialog dialog = new ProgressDialog(context);
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dialog.setTitle(title);
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dialog.setMessage(message);
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dialog.setIndeterminate(indeterminate);
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dialog.setCancelable(cancelable);
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dialog.setOnCancelListener(cancelListener);
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dialog.show();
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return dialog;
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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LayoutInflater inflater = LayoutInflater.from(mContext);
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if (mProgressStyle == STYLE_HORIZONTAL) {
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/* Use a separate handler to update the text views as they
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* must be updated on the same thread that created them.
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*/
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mViewUpdateHandler = new Handler() {
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@Override
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public void handleMessage(Message msg) {
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super.handleMessage(msg);
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/* Update the number and percent */
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int progress = mProgress.getProgress();
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int max = mProgress.getMax();
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double percent = (double) progress / (double) max;
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String format = mProgressNumberFormat;
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mProgressNumber.setText(String.format(format, progress, max));
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SpannableString tmp = new SpannableString(mProgressPercentFormat.format(percent));
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tmp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD),
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0, tmp.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
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mProgressPercent.setText(tmp);
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}
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};
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View view = inflater.inflate(R.layout.alert_dialog_progress, null);
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mProgress = (ProgressBar) view.findViewById(R.id.progress);
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mProgressNumber = (TextView) view.findViewById(R.id.progress_number);
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mProgressNumberFormat = "%d/%d";
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mProgressPercent = (TextView) view.findViewById(R.id.progress_percent);
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mProgressPercentFormat = NumberFormat.getPercentInstance();
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mProgressPercentFormat.setMaximumFractionDigits(0);
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setView(view);
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} else {
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View view = inflater.inflate(R.layout.progress_dialog, null);
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mProgress = (ProgressBar) view.findViewById(R.id.progress);
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mMessageView = (TextView) view.findViewById(R.id.message);
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setView(view);
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}
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if (mMax > 0) {
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setMax(mMax);
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}
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if (mProgressVal > 0) {
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setProgress(mProgressVal);
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}
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if (mSecondaryProgressVal > 0) {
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setSecondaryProgress(mSecondaryProgressVal);
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}
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if (mIncrementBy > 0) {
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incrementProgressBy(mIncrementBy);
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}
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if (mIncrementSecondaryBy > 0) {
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incrementSecondaryProgressBy(mIncrementSecondaryBy);
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}
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if (mProgressDrawable != null) {
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setProgressDrawable(mProgressDrawable);
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}
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if (mIndeterminateDrawable != null) {
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setIndeterminateDrawable(mIndeterminateDrawable);
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}
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if (mMessage != null) {
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setMessage(mMessage);
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}
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setIndeterminate(mIndeterminate);
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onProgressChanged();
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super.onCreate(savedInstanceState);
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}
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@Override
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public void onStart() {
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super.onStart();
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mHasStarted = true;
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}
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@Override
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protected void onStop() {
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super.onStop();
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mHasStarted = false;
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}
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public void setProgress(int value) {
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if (mHasStarted) {
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mProgress.setProgress(value);
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onProgressChanged();
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} else {
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mProgressVal = value;
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}
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}
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public void setSecondaryProgress(int secondaryProgress) {
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if (mProgress != null) {
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mProgress.setSecondaryProgress(secondaryProgress);
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onProgressChanged();
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} else {
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mSecondaryProgressVal = secondaryProgress;
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}
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}
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public int getProgress() {
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if (mProgress != null) {
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return mProgress.getProgress();
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}
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return mProgressVal;
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}
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public int getSecondaryProgress() {
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if (mProgress != null) {
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return mProgress.getSecondaryProgress();
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}
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return mSecondaryProgressVal;
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}
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public int getMax() {
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if (mProgress != null) {
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return mProgress.getMax();
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}
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return mMax;
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}
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public void setMax(int max) {
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if (mProgress != null) {
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mProgress.setMax(max);
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onProgressChanged();
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} else {
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mMax = max;
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}
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}
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public void incrementProgressBy(int diff) {
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if (mProgress != null) {
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mProgress.incrementProgressBy(diff);
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onProgressChanged();
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} else {
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mIncrementBy += diff;
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}
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}
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public void incrementSecondaryProgressBy(int diff) {
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if (mProgress != null) {
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mProgress.incrementSecondaryProgressBy(diff);
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onProgressChanged();
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} else {
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mIncrementSecondaryBy += diff;
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}
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}
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public void setProgressDrawable(Drawable d) {
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if (mProgress != null) {
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mProgress.setProgressDrawable(d);
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} else {
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mProgressDrawable = d;
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}
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}
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public void setIndeterminateDrawable(Drawable d) {
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if (mProgress != null) {
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mProgress.setIndeterminateDrawable(d);
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} else {
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mIndeterminateDrawable = d;
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}
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}
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public void setIndeterminate(boolean indeterminate) {
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if (mProgress != null) {
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mProgress.setIndeterminate(indeterminate);
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} else {
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mIndeterminate = indeterminate;
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}
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}
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public boolean isIndeterminate() {
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if (mProgress != null) {
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return mProgress.isIndeterminate();
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}
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return mIndeterminate;
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}
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@Override
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public void setMessage(CharSequence message) {
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if (mProgress != null) {
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if (mProgressStyle == STYLE_HORIZONTAL) {
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super.setMessage(message);
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} else {
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if (mMessageView != null) {
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mMessageView.setText(message);
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}
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else {
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mMessage = message;
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}
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}
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} else {
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mMessage = message;
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}
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}
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public void setProgressStyle(int style) {
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mProgressStyle = style;
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}
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/**
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* Change the format of Progress Number. The default is "current/max".
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* Should not be called during the number is progressing.
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* @param format Should contain two "%d". The first is used for current number
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* and the second is used for the maximum.
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* @hide
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*/
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public void setProgressNumberFormat(String format) {
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mProgressNumberFormat = format;
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}
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private void onProgressChanged() {
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if (mProgressStyle == STYLE_HORIZONTAL) {
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mViewUpdateHandler.sendEmptyMessage(0);
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}
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}
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}
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