add remote image support to toolbar

Differential Revision: D2493627

ReactAndroid/src/main/java/com/facebook/react/views/toolbar/DrawableWithIntrinsicSize.java

@@ -0,0 +1,42 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.react.views.toolbar;
+
+import android.graphics.drawable.Drawable;
+
+import com.facebook.drawee.drawable.ForwardingDrawable;
+import com.facebook.imagepipeline.image.ImageInfo;
+import com.facebook.react.uimanager.PixelUtil;
+
+/**
+ * Fresco currently sets drawables' intrinsic size to (-1, -1). This is to guarantee that scaling is
+ * performed correctly. In the case of the Toolbar, we don't have access to the widget's internal
+ * ImageView, which has width/height set to WRAP_CONTENT, which relies on intrinsic size.
+ *
+ * To work around this we have this class which just wraps another Drawable, but returns the correct
+ * dimensions in getIntrinsicWidth/Height. This makes WRAP_CONTENT work in Toolbar's internals.
+ *
+ * This drawable uses the size of a loaded image to determine the intrinsic size. It therefore can't
+ * be used safely until *after* an image has loaded, and must be replaced when the image is
+ * replaced.
+ */
+public class DrawableWithIntrinsicSize extends ForwardingDrawable implements Drawable.Callback {
+
+  private final ImageInfo mImageInfo;
+
+  public DrawableWithIntrinsicSize(Drawable drawable, ImageInfo imageInfo) {
+    super(drawable);
+    mImageInfo = imageInfo;
+  }
+
+  @Override
+  public int getIntrinsicWidth() {
+    return (int) PixelUtil.toDIPFromPixel(mImageInfo.getWidth());
+  }
+
+  @Override
+  public int getIntrinsicHeight() {
+    return (int) PixelUtil.toDIPFromPixel(mImageInfo.getHeight());
+  }
+
+}

ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbar.java

@@ -0,0 +1,250 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.react.views.toolbar;
+
+import javax.annotation.Nullable;
+
+import android.content.Context;
+import android.graphics.drawable.Animatable;
+import android.net.Uri;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import com.facebook.drawee.backends.pipeline.Fresco;
+import com.facebook.drawee.controller.BaseControllerListener;
+import com.facebook.drawee.controller.ControllerListener;
+import com.facebook.drawee.drawable.ScalingUtils;
+import com.facebook.drawee.generic.GenericDraweeHierarchy;
+import com.facebook.drawee.generic.GenericDraweeHierarchyBuilder;
+import com.facebook.drawee.interfaces.DraweeController;
+import com.facebook.drawee.view.DraweeHolder;
+import com.facebook.drawee.view.MultiDraweeHolder;
+import com.facebook.imagepipeline.image.ImageInfo;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+
+/**
+ * Custom implementation of the {@link Toolbar} widget that adds support for remote images in logo
+ * and navigationIcon using fresco.
+ */
+public class ReactToolbar extends Toolbar {
+  private static final String PROP_ACTION_ICON = "icon";
+  private static final String PROP_ACTION_SHOW = "show";
+  private static final String PROP_ACTION_SHOW_WITH_TEXT = "showWithText";
+  private static final String PROP_ACTION_TITLE = "title";
+
+  private final DraweeHolder mLogoHolder;
+  private final DraweeHolder mNavIconHolder;
+  private final MultiDraweeHolder<GenericDraweeHierarchy> mActionsHolder =
+      new MultiDraweeHolder<>();
+
+  private final ControllerListener<ImageInfo> mLogoControllerListener =
+      new BaseControllerListener<ImageInfo>() {
+        @Override
+        public void onFinalImageSet(
+            String id,
+            @Nullable final ImageInfo imageInfo,
+            @Nullable Animatable animatable) {
+          if (imageInfo != null) {
+            final DrawableWithIntrinsicSize logoDrawable =
+                new DrawableWithIntrinsicSize(mLogoHolder.getTopLevelDrawable(), imageInfo);
+            setLogo(logoDrawable);
+          }
+        }
+      };
+
+  private final ControllerListener<ImageInfo> mNavIconControllerListener =
+      new BaseControllerListener<ImageInfo>() {
+        @Override
+        public void onFinalImageSet(
+            String id,
+            @Nullable final ImageInfo imageInfo,
+            @Nullable Animatable animatable) {
+          if (imageInfo != null) {
+            final DrawableWithIntrinsicSize navIconDrawable =
+                new DrawableWithIntrinsicSize(mNavIconHolder.getTopLevelDrawable(), imageInfo);
+            setNavigationIcon(navIconDrawable);
+          }
+        }
+      };
+
+  private static class ActionIconControllerListener extends BaseControllerListener<ImageInfo> {
+    private final MenuItem mItem;
+    private final DraweeHolder mHolder;
+
+    ActionIconControllerListener(MenuItem item, DraweeHolder holder) {
+      mItem = item;
+      mHolder = holder;
+    }
+
+    @Override
+    public void onFinalImageSet(
+        String id,
+        @Nullable ImageInfo imageInfo,
+        @Nullable Animatable animatable) {
+      if (imageInfo != null) {
+        mItem.setIcon(new DrawableWithIntrinsicSize(mHolder.getTopLevelDrawable(), imageInfo));
+      }
+    }
+  }
+
+  public ReactToolbar(Context context) {
+    super(context);
+
+    mLogoHolder = DraweeHolder.create(createDraweeHierarchy(), context);
+    mNavIconHolder = DraweeHolder.create(createDraweeHierarchy(), context);
+  }
+
+  private final Runnable mLayoutRunnable = new Runnable() {
+    @Override
+    public void run() {
+      measure(
+          MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.EXACTLY),
+          MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.EXACTLY));
+      layout(getLeft(), getTop(), getRight(), getBottom());
+    }
+  };
+
+  @Override
+  public void requestLayout() {
+    super.requestLayout();
+
+    // The toolbar relies on a measure + layout pass happening after it calls requestLayout().
+    // Without this, certain calls (e.g. setLogo) only take effect after a second invalidation.
+    post(mLayoutRunnable);
+  }
+
+  @Override
+  public void onDetachedFromWindow() {
+    super.onDetachedFromWindow();
+    detachDraweeHolders();
+  }
+
+  @Override
+  public void onStartTemporaryDetach() {
+    super.onStartTemporaryDetach();
+    detachDraweeHolders();
+  }
+
+  @Override
+  public void onAttachedToWindow() {
+    super.onAttachedToWindow();
+    attachDraweeHolders();
+  }
+
+  @Override
+  public void onFinishTemporaryDetach() {
+    super.onFinishTemporaryDetach();
+    mLogoHolder.onAttach();
+    mNavIconHolder.onAttach();
+  }
+
+  private void detachDraweeHolders() {
+    mLogoHolder.onDetach();
+    mNavIconHolder.onDetach();
+    mActionsHolder.onDetach();
+  }
+
+  private void attachDraweeHolders() {
+    mLogoHolder.onAttach();
+    mNavIconHolder.onAttach();
+    mActionsHolder.onAttach();
+  }
+
+  /* package */ void setLogoSource(@Nullable ReadableMap source) {
+    String uri = source != null ? source.getString("uri") : null;
+    if (uri == null) {
+      setLogo(null);
+    } else if (uri.startsWith("http://") || uri.startsWith("https://")) {
+      DraweeController controller = Fresco.newDraweeControllerBuilder()
+          .setUri(Uri.parse(uri))
+          .setControllerListener(mLogoControllerListener)
+          .setOldController(mLogoHolder.getController())
+          .build();
+      mLogoHolder.setController(controller);
+    } else {
+      setLogo(getDrawableResourceByName(uri));
+    }
+  }
+
+  /* package */ void setNavIconSource(@Nullable ReadableMap source) {
+    String uri = source != null ? source.getString("uri") : null;
+    if (uri == null) {
+      setNavigationIcon(null);
+    } else if (uri.startsWith("http://") || uri.startsWith("https://")) {
+      DraweeController controller = Fresco.newDraweeControllerBuilder()
+          .setUri(Uri.parse(uri))
+          .setControllerListener(mNavIconControllerListener)
+          .setOldController(mNavIconHolder.getController())
+          .build();
+      mNavIconHolder.setController(controller);
+    } else {
+      setNavigationIcon(getDrawableResourceByName(uri));
+    }
+  }
+
+  /* package */ void setActions(@Nullable ReadableArray actions) {
+    Menu menu = getMenu();
+    menu.clear();
+    mActionsHolder.clear();
+    if (actions != null) {
+      for (int i = 0; i < actions.size(); i++) {
+        ReadableMap action = actions.getMap(i);
+        MenuItem item = menu.add(Menu.NONE, Menu.NONE, i, action.getString(PROP_ACTION_TITLE));
+        ReadableMap icon = action.hasKey(PROP_ACTION_ICON) ? action.getMap(PROP_ACTION_ICON) : null;
+        if (icon != null) {
+          String iconSource = icon.getString("uri");
+          if (iconSource.startsWith("http://") || iconSource.startsWith("https://")) {
+            setMenuItemIcon(item, icon);
+          } else {
+            item.setIcon(getDrawableResourceByName(iconSource));
+          }
+        }
+        int showAsAction = action.hasKey(PROP_ACTION_SHOW)
+            ? action.getInt(PROP_ACTION_SHOW)
+            : MenuItem.SHOW_AS_ACTION_NEVER;
+        if (action.hasKey(PROP_ACTION_SHOW_WITH_TEXT) &&
+            action.getBoolean(PROP_ACTION_SHOW_WITH_TEXT)) {
+          showAsAction = showAsAction | MenuItem.SHOW_AS_ACTION_WITH_TEXT;
+        }
+        item.setShowAsAction(showAsAction);
+      }
+    }
+  }
+
+  /**
+   * This is only used when the icon is remote (http/s). Creates & adds a new {@link DraweeHolder}
+   * to {@link #mActionsHolder} and attaches a {@link ActionIconControllerListener} that just sets
+   * the top level drawable when it's loaded.
+   */
+  private void setMenuItemIcon(MenuItem item, ReadableMap icon) {
+    String iconSource = icon.getString("uri");
+
+    DraweeHolder<GenericDraweeHierarchy> holder =
+        DraweeHolder.create(createDraweeHierarchy(), getContext());
+    DraweeController controller = Fresco.newDraweeControllerBuilder()
+        .setUri(Uri.parse(iconSource))
+        .setControllerListener(new ActionIconControllerListener(item, holder))
+        .setOldController(holder.getController())
+        .build();
+    holder.setController(controller);
+
+    mActionsHolder.add(holder);
+  }
+
+  private GenericDraweeHierarchy createDraweeHierarchy() {
+    return new GenericDraweeHierarchyBuilder(getResources())
+        .setActualImageScaleType(ScalingUtils.ScaleType.FIT_CENTER)
+        .setFadeDuration(0)
+        .build();
+  }
+
+  private int getDrawableResourceByName(String name) {
+    return getResources().getIdentifier(
+        name,
+        "drawable",
+        getContext().getPackageName());
+  }
+
+}

ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbarManager.java

@@ -11,19 +11,20 @@ package com.facebook.react.views.toolbar;
 
 import javax.annotation.Nullable;
 
+import java.util.Map;
+
 import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Color;
 import android.os.SystemClock;
-import android.support.v7.widget.Toolbar;
-import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 
 import com.facebook.react.R;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.common.MapBuilder;
 import com.facebook.react.uimanager.ReactProp;
 import com.facebook.react.uimanager.ThemedReactContext;
 import com.facebook.react.uimanager.UIManagerModule;
@@ -32,52 +33,39 @@ import com.facebook.react.uimanager.events.EventDispatcher;
 import com.facebook.react.views.toolbar.events.ToolbarClickEvent;
 
 /**
- * Manages instances of Toolbar.
+ * Manages instances of ReactToolbar.
  */
-public class ReactToolbarManager extends ViewGroupManager<Toolbar> {
+public class ReactToolbarManager extends ViewGroupManager<ReactToolbar> {
 
   private static final String REACT_CLASS = "ToolbarAndroid";
 
-  private static final String PROP_ACTION_ICON = "icon";
-  private static final String PROP_ACTION_SHOW = "show";
-  private static final String PROP_ACTION_SHOW_WITH_TEXT = "showWithText";
-  private static final String PROP_ACTION_TITLE = "title";
-
   @Override
   public String getName() {
     return REACT_CLASS;
   }
 
   @Override
-  protected Toolbar createViewInstance(ThemedReactContext reactContext) {
-    return new Toolbar(reactContext);
+  protected ReactToolbar createViewInstance(ThemedReactContext reactContext) {
+    return new ReactToolbar(reactContext);
   }
 
   @ReactProp(name = "logo")
-  public void setLogo(Toolbar view, @Nullable String logo) {
-    if (logo != null) {
-      view.setLogo(getDrawableResourceByName(view.getContext(), logo));
-    } else {
-      view.setLogo(null);
-    }
+  public void setLogo(ReactToolbar view, @Nullable ReadableMap logo) {
+    view.setLogoSource(logo);
   }
 
   @ReactProp(name = "navIcon")
-  public void setNavIcon(Toolbar view, @Nullable String navIcon) {
-    if (navIcon != null) {
-      view.setNavigationIcon(getDrawableResourceByName(view.getContext(), navIcon));
-    } else {
-      view.setNavigationIcon(null);
-    }
+  public void setNavIcon(ReactToolbar view, @Nullable ReadableMap navIcon) {
+    view.setNavIconSource(navIcon);
   }
 
   @ReactProp(name = "subtitle")
-  public void setSubtitle(Toolbar view, @Nullable String subtitle) {
+  public void setSubtitle(ReactToolbar view, @Nullable String subtitle) {
     view.setSubtitle(subtitle);
   }
 
   @ReactProp(name = "subtitleColor", customType = "Color")
-  public void setSubtitleColor(Toolbar view, @Nullable Integer subtitleColor) {
+  public void setSubtitleColor(ReactToolbar view, @Nullable Integer subtitleColor) {
     int[] defaultColors = getDefaultColors(view.getContext());
     if (subtitleColor != null) {
       view.setSubtitleTextColor(subtitleColor);
@@ -87,12 +75,12 @@ public class ReactToolbarManager extends ViewGroupManager<Toolbar> {
   }
 
   @ReactProp(name = "title")
-  public void setTitle(Toolbar view, @Nullable String title) {
+  public void setTitle(ReactToolbar view, @Nullable String title) {
     view.setTitle(title);
   }
 
   @ReactProp(name = "titleColor", customType = "Color")
-  public void setTitleColor(Toolbar view, @Nullable Integer titleColor) {
+  public void setTitleColor(ReactToolbar view, @Nullable Integer titleColor) {
     int[] defaultColors = getDefaultColors(view.getContext());
     if (titleColor != null) {
       view.setTitleTextColor(titleColor);
@@ -102,37 +90,12 @@ public class ReactToolbarManager extends ViewGroupManager<Toolbar> {
   }
 
   @ReactProp(name = "actions")
-  public void setActions(Toolbar view, @Nullable ReadableArray actions) {
-    Menu menu = view.getMenu();
-    menu.clear();
-    if (actions != null) {
-      for (int i = 0; i < actions.size(); i++) {
-        ReadableMap action = actions.getMap(i);
-        MenuItem item = menu.add(Menu.NONE, Menu.NONE, i, action.getString(PROP_ACTION_TITLE));
-        String icon = action.hasKey(PROP_ACTION_ICON) ? action.getString(PROP_ACTION_ICON) : null;
-        if (icon != null) {
-          item.setIcon(getDrawableResourceByName(view.getContext(), icon));
-        }
-        String show = action.hasKey(PROP_ACTION_SHOW) ? action.getString(PROP_ACTION_SHOW) : null;
-        if (show != null) {
-          int showAsAction = MenuItem.SHOW_AS_ACTION_NEVER;
-          if ("always".equals(show)) {
-            showAsAction = MenuItem.SHOW_AS_ACTION_ALWAYS;
-          } else if ("ifRoom".equals(show)) {
-            showAsAction = MenuItem.SHOW_AS_ACTION_IF_ROOM;
-          }
-          if (action.hasKey(PROP_ACTION_SHOW_WITH_TEXT) &&
-              action.getBoolean(PROP_ACTION_SHOW_WITH_TEXT)) {
-            showAsAction = showAsAction | MenuItem.SHOW_AS_ACTION_WITH_TEXT;
-          }
-          item.setShowAsAction(showAsAction);
-        }
-      }
-    }
+  public void setActions(ReactToolbar view, @Nullable ReadableArray actions) {
+    view.setActions(actions);
   }
 
   @Override
-  protected void addEventEmitters(final ThemedReactContext reactContext, final Toolbar view) {
+  protected void addEventEmitters(final ThemedReactContext reactContext, final ReactToolbar view) {
     final EventDispatcher mEventDispatcher = reactContext.getNativeModule(UIManagerModule.class)
         .getEventDispatcher();
     view.setNavigationOnClickListener(
@@ -145,7 +108,7 @@ public class ReactToolbarManager extends ViewGroupManager<Toolbar> {
         });
 
     view.setOnMenuItemClickListener(
-        new Toolbar.OnMenuItemClickListener() {
+        new ReactToolbar.OnMenuItemClickListener() {
           @Override
           public boolean onMenuItemClick(MenuItem menuItem) {
             mEventDispatcher.dispatchEvent(
@@ -158,6 +121,17 @@ public class ReactToolbarManager extends ViewGroupManager<Toolbar> {
         });
   }
 
+  @Nullable
+  @Override
+  public Map<String, Object> getExportedViewConstants() {
+    return MapBuilder.<String, Object>of(
+        "ShowAsAction",
+        MapBuilder.of(
+            "never", MenuItem.SHOW_AS_ACTION_NEVER,
+            "always", MenuItem.SHOW_AS_ACTION_ALWAYS,
+            "ifRoom", MenuItem.SHOW_AS_ACTION_IF_ROOM));
+  }
+
   @Override
   public boolean needsCustomLayoutForChildren() {
     return true;
@@ -205,12 +179,4 @@ public class ReactToolbarManager extends ViewGroupManager<Toolbar> {
     }
   }
 
-  private static int getDrawableResourceByName(Context context, String name) {
-    name = name.toLowerCase().replace("-", "_");
-    return context.getResources().getIdentifier(
-        name,
-        "drawable",
-        context.getPackageName());
-  }
-
 }