[Downloads] Fill in the drawer

chrome/android/java/src/org/chromium/chrome/browser/download/ui/DownloadManagerUi.java

Index: chrome/android/java/src/org/chromium/chrome/browser/download/ui/DownloadManagerUi.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/download/ui/DownloadManagerUi.java b/chrome/android/java/src/org/chromium/chrome/browser/download/ui/DownloadManagerUi.java
index f66d7efc3dbbe40b681e9dfac136db9323c9703d..8f9b88f753589723486daf224433fbeda53af95b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/download/ui/DownloadManagerUi.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/download/ui/DownloadManagerUi.java
@@ -6,25 +6,41 @@ package org.chromium.chrome.browser.download.ui;
 
 import android.app.Activity;
 import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.os.AsyncTask;
+import android.os.Environment;
+import android.os.StatFs;
 import android.support.v4.widget.DrawerLayout;
 import android.support.v7.app.ActionBarDrawerToggle;
 import android.support.v7.widget.Toolbar;
 import android.support.v7.widget.Toolbar.OnMenuItemClickListener;
+import android.text.format.Formatter;
 import android.util.AttributeSet;
 import android.view.Gravity;
+import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.ListView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
 
 import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.base.Log;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.widget.FadingShadow;
 import org.chromium.chrome.browser.widget.FadingShadowView;
+import org.chromium.chrome.browser.widget.TintedDrawable;
 import org.chromium.ui.base.DeviceFormFactor;
 
 /**
  * Displays and manages the UI for the download manager.
  */
 public class DownloadManagerUi extends DrawerLayout implements OnMenuItemClickListener {
+    private static final String TAG = "download_ui";
 
     /** Responds to events occurring in the DownloadManagerUi. */
     public interface DownloadManagerUiDelegate {
@@ -32,12 +48,152 @@ public class DownloadManagerUi extends DrawerLayout implements OnMenuItemClickLi
         void onCloseButtonClicked(DownloadManagerUi ui);
     }
 
+    /** Manages the display of space used by the downloads. */
+    private static final class SpaceDisplay {
+        private final AsyncTask<Void, Void, Long> mFileSystemBytesTask;
+
+        private TextView mSpaceUsedTextView;
+        private TextView mSpaceTotalTextView;
+        private ProgressBar mSpaceBar;
+        private long mFileSystemBytes = Long.MAX_VALUE;
+
+        SpaceDisplay(final ViewGroup parent) {
+            mSpaceUsedTextView = (TextView) parent.findViewById(R.id.space_used_display);
+            mSpaceTotalTextView = (TextView) parent.findViewById(R.id.space_total_display);
+            mSpaceBar = (ProgressBar) parent.findViewById(R.id.space_bar);
+
+            mFileSystemBytesTask = new AsyncTask<Void, Void, Long>() {
+                @Override
+                protected Long doInBackground(Void... params) {
+                    StatFs statFs = new StatFs(Environment.getExternalStoragePublicDirectory(
+                            Environment.DIRECTORY_DOWNLOADS).getPath());
+                    long totalBlocks = ApiCompatibilityUtils.getBlockCount(statFs);
+                    long blockSize = ApiCompatibilityUtils.getBlockSize(statFs);
+                    long fileSystemBytes = totalBlocks * blockSize;
+                    return fileSystemBytes;
+                }
+            };
+            mFileSystemBytesTask.execute();
+        }
+
+        private void update(long usedBytes) {
+            Context context = mSpaceUsedTextView.getContext();
+
+            if (mFileSystemBytes == Long.MAX_VALUE) {
+                try {
+                    mFileSystemBytes = mFileSystemBytesTask.get();
+                } catch (Exception e) {
+                    Log.e(TAG, "Failed to get file system size.");
+                }
+
+                // Display how big the storage is.
+                String fileSystemReadable = Formatter.formatFileSize(context, mFileSystemBytes);
+                mSpaceTotalTextView.setText(context.getString(
+                        R.string.download_manager_ui_space_used, fileSystemReadable));
+            }
+
+            // Indicate how much space has been used by downloads.
+            int percentage =
+                    mFileSystemBytes == 0 ? 0 : (int) (100.0 * usedBytes / mFileSystemBytes);
+            mSpaceBar.setProgress(percentage);
+            mSpaceUsedTextView.setText(Formatter.formatFileSize(context, usedBytes));
+        }
+    }
+
+    /** Allows selecting an item from a list displayed in the drawer. */
+    private static final class FilterAdapter
+            extends BaseAdapter implements AdapterView.OnItemClickListener {
+
+        /** Icons and labels for each filter in the menu. */
+        private static final int[][] FILTER_LIST = new int[][] {
+            {R.drawable.ic_get_app_white, R.string.download_manager_ui_all_downloads},
+            {R.drawable.ic_drive_site_white, R.string.download_manager_ui_pages},
+            {R.drawable.ic_music_video_white, R.string.download_manager_ui_video},
+            {R.drawable.ic_music_note_white, R.string.download_manager_ui_audio},
+            {R.drawable.ic_image_white, R.string.download_manager_ui_images},
+            {R.drawable.ic_drive_file_white, R.string.download_manager_ui_documents},
+            {R.drawable.ic_folder_white, R.string.download_manager_ui_other}
+        };
+
+        private final DrawerLayout mRootLayout;
+        private final int mSelectedBackgroundColor;
+        private int mSelectedIndex;
+
+        public FilterAdapter(DrawerLayout parent) {
+            mRootLayout = parent;
+            mSelectedBackgroundColor = ApiCompatibilityUtils.getColor(
+                    parent.getContext().getResources(), R.color.default_primary_color);
+        }
+
+        @Override
+        public int getCount() {
+            return FILTER_LIST.length;
+        }
+
+        @Override
+        public Object getItem(int position) {
+            return FILTER_LIST[position];
+        }
+
+        @Override
+        public long getItemId(int position) {
+            return position;
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            Context context = mRootLayout.getContext();
+            Resources resources = context.getResources();
+
+            View view = convertView;
+            if (view == null) {
+                view = LayoutInflater.from(context).inflate(
+                        R.layout.download_manager_ui_drawer_filter, null);
+            }
+
+            int iconId = FILTER_LIST[position][0];
+            TextView labelView = ((TextView) view.findViewById(R.id.label));
+            labelView.setText(FILTER_LIST[position][1]);
+
+            Drawable iconDrawable = null;
+            if (position == mSelectedIndex) {
+                // Highlight the selected item by changing the foreground and background colors.
+                view.setBackgroundColor(mSelectedBackgroundColor);
+                iconDrawable = TintedDrawable.constructTintedDrawable(
+                        resources, iconId, R.color.light_active_color);
+                labelView.setTextColor(
+                        ApiCompatibilityUtils.getColor(resources, R.color.light_active_color));
+            } else {
+                // Draw the item normally.
+                view.setBackground(null);
+                iconDrawable = TintedDrawable.constructTintedDrawable(
+                        resources, iconId, R.color.descriptive_text_color);
+                labelView.setTextColor(
+                        ApiCompatibilityUtils.getColor(resources, R.color.default_text_color));
+            }
+
+            labelView.setCompoundDrawablesWithIntrinsicBounds(iconDrawable, null, null, null);
+            return view;
+        }
+
+        @Override
+        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+            mSelectedIndex = position;
+            notifyDataSetChanged();
+            mRootLayout.closeDrawer(Gravity.START);
+        }
+    }
+
+    private final FilterAdapter mFilterAdapter;
     private DownloadManagerUiDelegate mDelegate;
     private ActionBarDrawerToggle mActionBarDrawerToggle;
     private DownloadManagerToolbar mToolbar;
+    private SpaceDisplay mSpaceDisplay;
+    private ListView mFilterView;
 
     public DownloadManagerUi(Context context, AttributeSet attrs) {
         super(context, attrs);
+        mFilterAdapter = new FilterAdapter(this);
     }
 
     @Override
@@ -46,6 +202,11 @@ public class DownloadManagerUi extends DrawerLayout implements OnMenuItemClickLi
 
         mToolbar = (DownloadManagerToolbar) findViewById(R.id.action_bar);
         mToolbar.setOnMenuItemClickListener(this);
+
+        mSpaceDisplay = new SpaceDisplay(this);
+        mFilterView = (ListView) findViewById(R.id.section_list);
+        mFilterView.setAdapter(mFilterAdapter);
+        mFilterView.setOnItemClickListener(mFilterAdapter);
     }
 
     /**
@@ -84,6 +245,8 @@ public class DownloadManagerUi extends DrawerLayout implements OnMenuItemClickLi
                     R.color.bookmark_app_bar_shadow_color), FadingShadow.POSITION_TOP);
         }
 
+        mSpaceDisplay.update(0);
+
         ((Toolbar) findViewById(R.id.action_bar)).setTitle(R.string.menu_downloads);
     }