1 files changed, 216 insertions, 0 deletions
diff --git a/src/com/android/messaging/ui/mediapicker/MediaChooser.java b/src/com/android/messaging/ui/mediapicker/MediaChooser.java
new file mode 100644
index 0000000..9ac0d1b
--- /dev/null
+++ b/src/com/android/messaging/ui/mediapicker/MediaChooser.java
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2015 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.messaging.ui.mediapicker;
+
+import android.app.FragmentManager;
+import android.content.Context;
+import android.support.v7.app.ActionBar;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageButton;
+
+import com.android.messaging.R;
+import com.android.messaging.datamodel.binding.ImmutableBindingRef;
+import com.android.messaging.datamodel.data.MediaPickerData;
+import com.android.messaging.datamodel.data.DraftMessageData.DraftMessageSubscriptionDataProvider;
+import com.android.messaging.ui.BasePagerViewHolder;
+import com.android.messaging.util.Assert;
+import com.android.messaging.util.OsUtil;
+
+abstract class MediaChooser extends BasePagerViewHolder
+        implements DraftMessageSubscriptionDataProvider {
+    /** The media picker that the chooser is hosted in */
+    protected final MediaPicker mMediaPicker;
+
+    /** Referencing the main media picker binding to perform data loading */
+    protected final ImmutableBindingRef<MediaPickerData> mBindingRef;
+
+    /** True if this is the selected chooser */
+    protected boolean mSelected;
+
+    /** True if this chooser is open */
+    protected boolean mOpen;
+
+    /** The button to show in the tab strip */
+    private ImageButton mTabButton;
+
+    /** Used by subclasses to indicate that no loader is required from the data model in order for
+     * this chooser to function.
+     */
+    public static final int NO_LOADER_REQUIRED = -1;
+
+    /**
+     * Initializes a new instance of the Chooser class
+     * @param mediaPicker The media picker that the chooser is hosted in
+     */
+    MediaChooser(final MediaPicker mediaPicker) {
+        Assert.notNull(mediaPicker);
+        mMediaPicker = mediaPicker;
+        mBindingRef = mediaPicker.getMediaPickerDataBinding();
+        mSelected = false;
+    }
+
+    protected void setSelected(final boolean selected) {
+        mSelected = selected;
+        if (selected) {
+            // If we're selected, it must be open
+            mOpen = true;
+        }
+        if (mTabButton != null) {
+            mTabButton.setSelected(selected);
+            mTabButton.setAlpha(selected ? 1 : 0.5f);
+        }
+    }
+
+    ImageButton getTabButton() {
+        return mTabButton;
+    }
+
+    void onCreateTabButton(final LayoutInflater inflater, final ViewGroup parent) {
+        mTabButton = (ImageButton) inflater.inflate(
+                R.layout.mediapicker_tab_button,
+                parent,
+                false /* addToParent */);
+        mTabButton.setImageResource(getIconResource());
+        mTabButton.setContentDescription(
+                inflater.getContext().getResources().getString(getIconDescriptionResource()));
+        setSelected(mSelected);
+        mTabButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(final View view) {
+                mMediaPicker.selectChooser(MediaChooser.this);
+            }
+        });
+    }
+
+    protected Context getContext() {
+        return mMediaPicker.getActivity();
+    }
+
+    protected FragmentManager getFragmentManager() {
+        return OsUtil.isAtLeastJB_MR1() ? mMediaPicker.getChildFragmentManager() :
+                mMediaPicker.getFragmentManager();
+    }
+    protected LayoutInflater getLayoutInflater() {
+        return LayoutInflater.from(getContext());
+    }
+
+    /** Allows the chooser to handle full screen change */
+    void onFullScreenChanged(final boolean fullScreen) {}
+
+    /** Allows the chooser to handle the chooser being opened or closed */
+    void onOpenedChanged(final boolean open) {
+        mOpen = open;
+    }
+
+    /** @return The bit field of media types that this chooser can pick */
+    public abstract int getSupportedMediaTypes();
+
+    /** @return The resource id of the icon for the chooser */
+    abstract int getIconResource();
+
+    /** @return The resource id of the string to use for the accessibility text of the icon */
+    abstract int getIconDescriptionResource();
+
+    /**
+     * Sets up the action bar to show the current state of the full-screen chooser
+     * @param actionBar The action bar to populate
+     */
+    void updateActionBar(final ActionBar actionBar) {
+        final int actionBarTitleResId = getActionBarTitleResId();
+        if (actionBarTitleResId == 0) {
+            actionBar.hide();
+        } else {
+            actionBar.setCustomView(null);
+            actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE);
+            actionBar.setDisplayHomeAsUpEnabled(true);
+            actionBar.show();
+            // Use X instead of <- in the action bar
+            actionBar.setHomeAsUpIndicator(R.drawable.ic_remove_small_light);
+            actionBar.setTitle(actionBarTitleResId);
+        }
+    }
+
+    /**
+     * Returns the resource Id used for the action bar title.
+     */
+    abstract int getActionBarTitleResId();
+
+    /**
+     * Throws an exception if the media chooser object doesn't require data support.
+     */
+    public void onDataUpdated(final Object data, final int loaderId) {
+        throw new IllegalStateException();
+    }
+
+    /**
+     * Called by the MediaPicker to determine whether this panel can be swiped down further. If
+     * not, then a swipe down gestured will be captured by the MediaPickerPanel to shrink the
+     * entire panel.
+     */
+    public boolean canSwipeDown() {
+        return false;
+    }
+
+    /**
+     * Typically the media picker is closed when the IME is opened, but this allows the chooser to
+     * specify that showing the IME is okay while the chooser is up
+     */
+    public boolean canShowIme() {
+        return false;
+    }
+
+    public boolean onBackPressed() {
+        return false;
+    }
+
+    public void onCreateOptionsMenu(final MenuInflater inflater, final Menu menu) {
+    }
+
+    public boolean onOptionsItemSelected(final MenuItem item) {
+        return false;
+    }
+
+    public void setThemeColor(final int color) {
+    }
+
+    /**
+     * Returns true if the chooser is owning any incoming touch events, so that the media picker
+     * panel won't process it and slide the panel.
+     */
+    public boolean isHandlingTouch() {
+        return false;
+    }
+
+    public void stopTouchHandling() {
+    }
+
+    @Override
+    public int getConversationSelfSubId() {
+        return mMediaPicker.getConversationSelfSubId();
+    }
+
+    /** Optional activity life-cycle methods to be overridden by subclasses */
+    public void onPause() { }
+    public void onResume() { }
+    protected void onRequestPermissionsResult(
+            final int requestCode, final String permissions[], final int[] grantResults) { }
+}