Adding paging for the widget/shortcut/folder customization area and fixing bugs.

Adding pages for customization drawer with initial implementation of proposed flow
layout for widgets.  Fixes for keeping all apps, and widgets in sync with Launcher
Model, optimizations for reloading all apps pages when invalidating.  Adding some
animations for tab transitions and feedback when long pressing to add certain items.

Change-Id: I8d51749f3a91c964bed35681f3a9192200b0d93e

1 files changed, 535 insertions, 0 deletions

diff --git a/src/com/android/launcher2/CustomizePagedView.java b/src/com/android/launcher2/CustomizePagedView.java
new file mode 100644
index 000000000..7679e398c
--- /dev/null
+++ b/src/com/android/launcher2/CustomizePagedView.java
@@ -0,0 +1,535 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher2;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProviderInfo;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Rect;
+import android.graphics.Bitmap.Config;
+import android.graphics.Region.Op;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.provider.LiveFolders;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+
+import com.android.launcher.R;
+
+public class CustomizePagedView extends PagedView
+    implements View.OnLongClickListener,
+                DragSource {
+
+    public enum CustomizationType {
+        WidgetCustomization,
+        FolderCustomization,
+        ShortcutCustomization,
+        WallpaperCustomization
+    }
+
+    private static final String TAG = "CustomizeWorkspace";
+    private static final boolean DEBUG = false;
+
+    private Launcher mLauncher;
+    private DragController mDragController;
+    private PackageManager mPackageManager;
+
+    private CustomizationType mCustomizationType;
+
+    private PagedViewCellLayout mTmpWidgetLayout;
+    private ArrayList<ArrayList<PagedViewCellLayout.LayoutParams>> mWidgetPages;
+    private List<AppWidgetProviderInfo> mWidgetList;
+    private List<ResolveInfo> mFolderList;
+    private List<ResolveInfo> mShortcutList;
+
+    private int mCellCountX;
+    private int mCellCountY;
+
+    private final Canvas mCanvas = new Canvas();
+    private final LayoutInflater mInflater;
+
+    public CustomizePagedView(Context context) {
+        this(context, null);
+    }
+
+    public CustomizePagedView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mCellCountX = 8;
+        mCellCountY = 4;
+        mCustomizationType = CustomizationType.WidgetCustomization;
+        mWidgetPages = new ArrayList<ArrayList<PagedViewCellLayout.LayoutParams>>();
+        mTmpWidgetLayout = new PagedViewCellLayout(context);
+        mInflater = LayoutInflater.from(context);
+        setupPage(mTmpWidgetLayout);
+        setVisibility(View.GONE);
+        setSoundEffectsEnabled(false);
+    }
+
+    public void setLauncher(Launcher launcher) {
+        Context context = getContext();
+        mLauncher = launcher;
+        mPackageManager = context.getPackageManager();
+    }
+
+    public void update() {
+        Context context = getContext();
+
+        // get the list of widgets
+        mWidgetList = AppWidgetManager.getInstance(mLauncher).getInstalledProviders();
+        Collections.sort(mWidgetList, new Comparator<AppWidgetProviderInfo>() {
+            @Override
+            public int compare(AppWidgetProviderInfo object1, AppWidgetProviderInfo object2) {
+                return object1.label.compareTo(object2.label);
+            }
+        });
+
+        Comparator<ResolveInfo> resolveInfoComparator = new Comparator<ResolveInfo>() {
+            @Override
+            public int compare(ResolveInfo object1, ResolveInfo object2) {
+                return object1.loadLabel(mPackageManager).toString().compareTo(
+                        object2.loadLabel(mPackageManager).toString());
+            }
+        };
+
+        // get the list of live folder intents
+        Intent liveFolderIntent = new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER);
+        mFolderList = mPackageManager.queryIntentActivities(liveFolderIntent, 0);
+
+        // manually create a separate entry for creating a folder in Launcher
+        ResolveInfo folder = new ResolveInfo();
+        folder.icon = R.drawable.ic_launcher_folder;
+        folder.labelRes = R.string.group_folder;
+        folder.resolvePackageName = context.getPackageName();
+        mFolderList.add(0, folder);
+        Collections.sort(mFolderList, resolveInfoComparator);
+
+        // get the list of shortcuts
+        Intent shortcutsIntent = new Intent(Intent.ACTION_CREATE_SHORTCUT);
+        mShortcutList = mPackageManager.queryIntentActivities(shortcutsIntent, 0);
+        Collections.sort(mShortcutList, resolveInfoComparator);
+
+        invalidatePageData();
+    }
+
+    public void setDragController(DragController dragger) {
+        mDragController = dragger;
+    }
+
+    public void setCustomizationFilter(CustomizationType filterType) {
+        mCustomizationType = filterType;
+        setCurrentScreen(0);
+        invalidatePageData();
+    }
+
+    @Override
+    public void onDropCompleted(View target, boolean success) {
+        // do nothing
+    }
+
+    @Override
+    public boolean onLongClick(View v) {
+        if (!v.isInTouchMode()) {
+            return false;
+        }
+
+        final View animView = v;
+        switch (mCustomizationType) {
+        case WidgetCustomization:
+            AppWidgetProviderInfo appWidgetInfo = (AppWidgetProviderInfo) v.getTag();
+            LauncherAppWidgetInfo dragInfo = new LauncherAppWidgetInfo(appWidgetInfo.provider);
+            dragInfo.minWidth = appWidgetInfo.minWidth;
+            dragInfo.minHeight = appWidgetInfo.minHeight;
+            mDragController.startDrag(v, this, dragInfo, DragController.DRAG_ACTION_COPY);
+            mLauncher.hideCustomizationDrawer();
+            return true;
+        case FolderCustomization:
+            // animate some feedback to the long press
+            animateClickFeedback(v, new Runnable() {
+                @Override
+                public void run() {
+                    // add the folder
+                    ResolveInfo resolveInfo = (ResolveInfo) animView.getTag();
+                    Intent createFolderIntent = new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER);
+                    if (resolveInfo.labelRes == R.string.group_folder) {
+                        // Create app shortcuts is a special built-in case of shortcuts
+                        createFolderIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME,
+                            getContext().getString(R.string.group_folder));
+                    } else {
+                        ComponentName name = new ComponentName(resolveInfo.activityInfo.packageName,
+                                resolveInfo.activityInfo.name);
+                        createFolderIntent.setComponent(name);
+                    }
+                    mLauncher.prepareAddItemFromHomeCustomizationDrawer();
+                    mLauncher.addLiveFolder(createFolderIntent);
+                }
+            });
+            return true;
+        case ShortcutCustomization:
+            // animate some feedback to the long press
+            animateClickFeedback(v, new Runnable() {
+                @Override
+                public void run() {
+                    // add the shortcut
+                    ResolveInfo info = (ResolveInfo) animView.getTag();
+                    Intent createShortcutIntent = new Intent(Intent.ACTION_CREATE_SHORTCUT);
+                    if (info.labelRes == R.string.group_applications) {
+                        // Create app shortcuts is a special built-in case of shortcuts
+                        createShortcutIntent.putExtra(
+                                Intent.EXTRA_SHORTCUT_NAME,getContext().getString(
+                                        R.string.group_applications));
+                    } else {
+                        ComponentName name = new ComponentName(info.activityInfo.packageName, 
+                                info.activityInfo.name);
+                        createShortcutIntent.setComponent(name);
+                    }
+                    mLauncher.prepareAddItemFromHomeCustomizationDrawer();
+                    mLauncher.processShortcut(createShortcutIntent);
+                }
+            });
+            return true;
+        }
+        return false;
+    }
+
+    private int relayoutWidgets() {
+        final int widgetCount = mWidgetList.size();
+        if (widgetCount == 0) return 0;
+
+        mWidgetPages.clear();
+        ArrayList<PagedViewCellLayout.LayoutParams> page = 
+            new ArrayList<PagedViewCellLayout.LayoutParams>();
+        mWidgetPages.add(page);
+        int rowOffsetX = 0;
+        int rowOffsetY = 0;
+        int curRowHeight = 0;
+        // we only get the cell dims this way for the layout calculations because
+        // we know that we aren't going to change the dims when we construct it
+        // afterwards
+        for (int i = 0; i < widgetCount; ++i) {
+            AppWidgetProviderInfo info = mWidgetList.get(i);
+            PagedViewCellLayout.LayoutParams params;
+
+            final int cellSpanX = mTmpWidgetLayout.estimateCellHSpan(info.minWidth);
+            final int cellSpanY = mTmpWidgetLayout.estimateCellVSpan(info.minHeight);
+
+            if (((rowOffsetX + cellSpanX) <= mCellCountX) &&
+                    ((rowOffsetY + cellSpanY) <= mCellCountY)) {
+                // just add to end of current row
+                params = new PagedViewCellLayout.LayoutParams(rowOffsetX, rowOffsetY,
+                        cellSpanX, cellSpanY);
+
+                rowOffsetX += cellSpanX;
+                curRowHeight = Math.max(curRowHeight, cellSpanY);
+            } else {
+                /*
+                // fix all the items in this last row to be bottom aligned
+                int prevRowOffsetX = rowOffsetX;
+                for (int j = page.size() - 1; j >= 0; --j) {
+                    PagedViewCellLayout.LayoutParams params = page.get(j);
+                    // skip once we get to the previous row
+                    if (params.cellX > prevRowOffsetX)
+                        break;
+
+                    params.cellY += curRowHeight - params.cellVSpan;
+                    prevRowOffsetX = params.cellX;
+                }
+                */
+
+                // doesn't fit on current row, see if we can start a new row on
+                // this page
+                if ((rowOffsetY + curRowHeight + cellSpanY) > mCellCountY) {
+                    // start a new page and add this item to it
+                    page = new ArrayList<PagedViewCellLayout.LayoutParams>();
+                    mWidgetPages.add(page);
+
+                    params = new PagedViewCellLayout.LayoutParams(0, 0, cellSpanX, cellSpanY);
+                    rowOffsetX = cellSpanX;
+                    rowOffsetY = 0;
+                    curRowHeight = cellSpanY;
+                } else {
+                    // add it to the current page on this new row
+                    params = new PagedViewCellLayout.LayoutParams(0, rowOffsetY + curRowHeight,
+                            cellSpanX, cellSpanY);
+
+                    rowOffsetX = cellSpanX;
+                    rowOffsetY += curRowHeight;
+                    curRowHeight = cellSpanY;
+                }
+            }
+
+            params.setTag(info);
+            page.add(params);
+        }
+        return mWidgetPages.size();
+    }
+
+    private Drawable getWidgetIcon(PagedViewCellLayout.LayoutParams params, 
+            AppWidgetProviderInfo info) {
+        PackageManager packageManager = mLauncher.getPackageManager();
+        String packageName = info.provider.getPackageName();
+        Drawable drawable = null;
+        if (info.previewImage != 0) {
+            drawable = packageManager.getDrawable(packageName, info.previewImage, null);
+            if (drawable == null) {
+                Log.w(TAG, "Can't load icon drawable 0x" + Integer.toHexString(info.icon)
+                        + " for provider: " + info.provider);
+            } else {
+                return drawable;
+            }
+        }
+
+        // If we don't have a preview image, create a default one
+        if (drawable == null) {
+            Resources resources = mLauncher.getResources();
+
+            // Determine the size the widget will take in the layout
+            // Create a new bitmap to hold the widget preview
+            int[] dims = mTmpWidgetLayout.estimateCellDimensions(getMeasuredWidth(), 
+                    getMeasuredHeight(), params.cellHSpan, params.cellVSpan);
+            final int width = dims[0];
+            final int height = dims[1] - 35;
+            // TEMP
+            // TEMP: HACK ABOVE TO GET TEXT TO SHOW
+            // TEMP
+            Bitmap bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
+            mCanvas.setBitmap(bitmap);
+            // For some reason, we must re-set the clip rect here, otherwise it will be wrong
+            mCanvas.clipRect(0, 0, width, height, Op.REPLACE);
+
+            Drawable background = resources.getDrawable(R.drawable.default_widget_preview);
+            background.setBounds(0, 0, width, height);
+            background.draw(mCanvas);
+
+            // Draw the icon vertically centered, flush left
+            try {
+                Rect tmpRect = new Rect();
+                Drawable icon = null;
+                if (info.icon != 0) {
+                    icon = packageManager.getDrawable(packageName, info.icon, null);
+                } else {
+                    icon = resources.getDrawable(R.drawable.ic_launcher_application);
+                }
+                background.getPadding(tmpRect);
+
+                final int iconSize = Math.min(
+                        Math.min(icon.getIntrinsicWidth(), width - tmpRect.left - tmpRect.right),
+                        Math.min(icon.getIntrinsicHeight(), height - tmpRect.top - tmpRect.bottom));
+                final int left = (width / 2) - (iconSize / 2);
+                final int top = (height / 2) - (iconSize / 2);
+                icon.setBounds(new Rect(left, top, left + iconSize, top + iconSize));
+                icon.draw(mCanvas);
+            } catch (Resources.NotFoundException e) {
+                // if we can't find the icon, then just don't draw it
+            }
+
+            drawable = new BitmapDrawable(resources, bitmap);
+        }
+        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
+        return drawable;
+    }
+
+    private void setupPage(PagedViewCellLayout layout) {
+        layout.setCellCount(mCellCountX, mCellCountY);
+        layout.setPadding(20, 10, 20, 0);
+    }
+
+    private void syncWidgetPages() {
+        if (mWidgetList == null) return;
+
+        // calculate the layout for all the widget pages first and ensure that
+        // we have the right number of pages
+        int numPages = relayoutWidgets();
+        int curNumPages = getChildCount();
+        // remove any extra pages after the "last" page
+        int extraPageDiff = curNumPages - numPages;
+        for (int i = 0; i < extraPageDiff; ++i) {
+            removeViewAt(numPages);
+        }
+        // add any necessary pages
+        for (int i = curNumPages; i < numPages; ++i) {
+            PagedViewCellLayout layout = new PagedViewCellLayout(getContext());
+            setupPage(layout);
+            addView(layout);
+        }
+    }
+
+    private void syncWidgetPageItems(int page) {
+        // ensure that we have the right number of items on the pages
+        PagedViewCellLayout layout = (PagedViewCellLayout) getChildAt(page);
+        final ArrayList<PagedViewCellLayout.LayoutParams> list = mWidgetPages.get(page);
+        final int count = list.size();
+        layout.removeAllViews();
+        for (int i = 0; i < count; ++i) {
+            PagedViewCellLayout.LayoutParams params = list.get(i);
+            AppWidgetProviderInfo info = (AppWidgetProviderInfo) params.getTag();
+            final Drawable icon = getWidgetIcon(params, info);
+            TextView text = (TextView) mInflater.inflate(R.layout.customize_paged_view_widget, 
+                    layout, false);
+            text.setCompoundDrawablesWithIntrinsicBounds(null, icon, null, null);
+            text.setText(info.label);
+            text.setTag(info);
+            text.setOnLongClickListener(this);
+
+            layout.addViewToCellLayout(text, -1, mWidgetList.indexOf(info), params);
+        }
+    }
+
+    private void syncListPages(List<ResolveInfo> list) {
+        // ensure that we have the right number of pages
+        int numPages = (int) Math.ceil((float) list.size() / (mCellCountX * mCellCountY));
+        int curNumPages = getChildCount();
+        // remove any extra pages after the "last" page
+        int extraPageDiff = curNumPages - numPages;
+        for (int i = 0; i < extraPageDiff; ++i) {
+            removeViewAt(numPages);
+        }
+        // add any necessary pages
+        for (int i = curNumPages; i < numPages; ++i) {
+            PagedViewCellLayout layout = new PagedViewCellLayout(getContext());
+            setupPage(layout);
+            addView(layout);
+        }
+    }
+
+    private void syncListPageItems(int page, List<ResolveInfo> list) {
+        // ensure that we have the right number of items on the pages
+        int numCells = mCellCountX * mCellCountY;
+        int startIndex = page * numCells;
+        int endIndex = Math.min(startIndex + numCells, list.size());
+        PagedViewCellLayout layout = (PagedViewCellLayout) getChildAt(page);
+        // TODO: we can optimize by just re-applying to existing views
+        layout.removeAllViews();
+        for (int i = startIndex; i < endIndex; ++i) {
+            ResolveInfo info = list.get(i);
+            Drawable image = info.loadIcon(mPackageManager);
+            TextView text = (TextView) mInflater.inflate(R.layout.customize_paged_view_item, 
+                    layout, false);
+            image.setBounds(0, 0, image.getIntrinsicWidth(), image.getIntrinsicHeight());
+            text.setCompoundDrawablesWithIntrinsicBounds(null, image, null, null);
+            text.setText(info.loadLabel(mPackageManager));
+            text.setTag(info);
+            text.setOnLongClickListener(this);
+
+            final int index = i - startIndex;
+            final int x = index % mCellCountX;
+            final int y = index / mCellCountX;
+            layout.addViewToCellLayout(text, -1, i, new PagedViewCellLayout.LayoutParams(x,y, 1,1));
+        }
+    }
+
+    private void syncWallpaperPages() {
+        // NOT CURRENTLY IMPLEMENTED
+        // ensure that we have the right number of pages
+        int numPages = 1;
+        int curNumPages = getChildCount();
+        // remove any extra pages after the "last" page
+        int extraPageDiff = curNumPages - numPages;
+        for (int i = 0; i < extraPageDiff; ++i) {
+            removeViewAt(numPages);
+        }
+        // add any necessary pages
+        for (int i = curNumPages; i < numPages; ++i) {
+            PagedViewCellLayout layout = new PagedViewCellLayout(getContext());
+            setupPage(layout);
+            addView(layout);
+        }
+    }
+
+    private void syncWallpaperPageItems(int page) {
+        PagedViewCellLayout layout = (PagedViewCellLayout) getChildAt(page);
+        layout.removeAllViews();
+
+        TextView text = (TextView) mInflater.inflate(
+                R.layout.customize_paged_view_wallpaper_placeholder, layout, false);
+        // NOTE: this is just place holder text until MikeJurka implements wallpaper picker
+        text.setText("Wallpaper customization coming soon!");
+
+        layout.addViewToCellLayout(text, -1, 0, new PagedViewCellLayout.LayoutParams(0, 0, 3, 1));
+    }
+
+    @Override
+    public void syncPages() {
+        switch (mCustomizationType) {
+        case WidgetCustomization:
+            syncWidgetPages();
+            break;
+        case FolderCustomization:
+            syncListPages(mFolderList);
+            break;
+        case ShortcutCustomization:
+            syncListPages(mShortcutList);
+            break;
+        case WallpaperCustomization:
+            syncWallpaperPages();
+            break;
+        default:
+            removeAllViews();
+            setCurrentScreen(0);
+            break;
+        }
+
+        // only try and center the page if there is one page
+        final int childCount = getChildCount();
+        if (childCount == 1) {
+            PagedViewCellLayout layout = (PagedViewCellLayout) getChildAt(0);
+            layout.enableCenteredContent(true);
+        } else {
+            for (int i = 0; i < childCount; ++i) {
+                PagedViewCellLayout layout = (PagedViewCellLayout) getChildAt(i);
+                layout.enableCenteredContent(false);
+            }
+        }
+
+        // bound the current page
+        setCurrentScreen(Math.max(0, Math.min(childCount - 1, getCurrentScreen())));
+    }
+
+    @Override
+    public void syncPageItems(int page) {
+        switch (mCustomizationType) {
+        case WidgetCustomization:
+            syncWidgetPageItems(page);
+            break;
+        case FolderCustomization:
+            syncListPageItems(page, mFolderList);
+            break;
+        case ShortcutCustomization:
+            syncListPageItems(page, mShortcutList);
+            break;
+        case WallpaperCustomization:
+            syncWallpaperPageItems(page);
+            break;
+        }
+    }
+}