implementation for new duplicate download UI

chrome/android/java/src/org/chromium/chrome/browser/infobar/DownloadOverwriteInfoBar.java

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.chrome.browser.infobar;
-
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-import android.graphics.Typeface;
-import android.net.Uri;
-import android.text.Spannable;
-import android.text.SpannableString;
-import android.text.TextUtils;
-import android.text.style.ClickableSpan;
-import android.text.style.StyleSpan;
-import android.view.View;
-
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.download.DownloadUtils;
-
-import java.util.List;
-
-/**
- * An infobar to ask whether to overwrite an existing file with a new download.
- */
-public class DownloadOverwriteInfoBar extends InfoBar {
-    private static final String TAG = "DownloadOverwriteInfoBar";
-
-    private final String mFileName;
-    private final String mDirName;
-    private final String mDirFullPath;
-
-    @CalledByNative
-    private static InfoBar createInfoBar(String fileName, String dirName, String dirFullPath) {
-        return new DownloadOverwriteInfoBar(fileName, dirName, dirFullPath);
-    }
-
-    /**
-     * Constructs DownloadOverwriteInfoBar.
-     * @param fileName The file name. ex) example.jpg
-     * @param dirName The dir name. ex) Downloads
-     * @param dirFullPath The full dir path. ex) sdcards/Downloads.  If empty, the Download Manager
-     *                    will be opened.
-     */
-    private DownloadOverwriteInfoBar(String fileName, String dirName, String dirFullPath) {
-        super(R.drawable.infobar_downloading, null, null);
-        mFileName = fileName;
-        mDirName = dirName;
-        mDirFullPath = dirFullPath;
-    }
-
-    @Override
-    public void onButtonClicked(boolean isPrimaryButton) {
-        int action = isPrimaryButton ? ActionType.OVERWRITE
-                                     : ActionType.CREATE_NEW_FILE;
-        onButtonClicked(action);
-    }
-
-    private boolean opensDownloadManager() {
-        return mDirFullPath == null || mDirFullPath.isEmpty();
-    }
-
-    private CharSequence getMessageText(Context context) {
-        String template = context.getString(R.string.download_overwrite_infobar_text);
-        Intent intent = null;
-
-        // If the full path is left empty, we assume that the file is in the Chrome Download
-        // Manager.  So then in formatInfoBarMessage, if the intent remains null then we are going
-        // to open the download manager when the directory name is clicked.
-        if (!opensDownloadManager()) intent = getIntentForDirectoryLaunch(mDirFullPath);
-        return formatInfoBarMessage(context, template, mFileName, mDirName, intent);
-    }
-
-    /**
-     * @param dirFullPath The full path of the directory to be launched.
-     * @return An Android intent that can launch the directory.
-     */
-    private static Intent getIntentForDirectoryLaunch(String dirFullPath) {
-        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
-        Uri uri = Uri.parse(dirFullPath);
-        if (uri == null) {
-            return null;
-        }
-        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.setDataAndType(uri, "*/*");
-        return intent;
-    }
-
-    @Override
-    public void createContent(InfoBarLayout layout) {
-        Context context = layout.getContext();
-        layout.setMessage(getMessageText(context));
-        layout.setButtons(
-                context.getString(R.string.download_overwrite_infobar_replace_file_button),
-                context.getString(R.string.download_overwrite_infobar_create_new_file_button));
-    }
-
-    /**
-     * Create infobar message in the form of CharSequence.
-     *
-     * @param context The context.
-     * @param template The template CharSequence.
-     * @param fileName The file name.
-     * @param dirName The directory name.
-     * @param dirNameIntent The intent to be launched when user touches the directory name link.
-     * @return CharSequence formatted message for InfoBar.
-     */
-    private CharSequence formatInfoBarMessage(final Context context, String template,
-            String fileName, String dirName, final Intent dirNameIntent) {
-        SpannableString formattedFileName = new SpannableString(fileName);
-        formattedFileName.setSpan(new StyleSpan(Typeface.BOLD), 0, fileName.length(),
-                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
-
-        SpannableString formattedDirName = new SpannableString(dirName);
-        if (canResolveIntent(context, dirNameIntent)) {
-            formattedDirName.setSpan(new ClickableSpan() {
-                @Override
-                public void onClick(View view) {
-                    context.startActivity(dirNameIntent);
-                }
-            }, 0, dirName.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
-        } else if (opensDownloadManager()) {
-            formattedDirName.setSpan(new ClickableSpan() {
-                @Override
-                public void onClick(View view) {
-                    DownloadUtils.showDownloadManager(null, null);
-                }
-            }, 0, dirName.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
-        }
-
-        return TextUtils.expandTemplate(template, formattedFileName, formattedDirName);
-    }
-
-    private static boolean canResolveIntent(Context context, Intent intent) {
-        if (context == null || intent == null) {
-            return false;
-        }
-        final PackageManager packageManager = context.getPackageManager();
-        List<ResolveInfo> resolveInfoList =
-                packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
-        return resolveInfoList.size() > 0;
-    }
-}