Gallery2: support loop/single video play mode

This change allows a video to be played repeatedly. It also
introduces an extension framework.

Change-Id: I5566192f138c1f0fd889b85496dd27fbf2aed10d
CRs-Fixed: 507973

1 files changed, 99 insertions, 0 deletions

diff --git a/src/org/codeaurora/gallery3d/ext/IActivityHooker.java b/src/org/codeaurora/gallery3d/ext/IActivityHooker.java
new file mode 100644
index 000000000..fa1b5c0a0
--- /dev/null
+++ b/src/org/codeaurora/gallery3d/ext/IActivityHooker.java
@@ -0,0 +1,99 @@
+package org.codeaurora.gallery3d.ext;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+
+/**
+ * Activity action hooker class. Host app's activity will call this hooker's
+ * functions in its lifecycle. For example:
+ * HostActivity.onCreate()-->hooker.onCreate(). But void init(Activity context,
+ * Intent intent) will be called before other functions. <br/>
+ * IActivityHooker objects may show menus, but we should give a unique menu id
+ * to every menus. Hooker can call getMenuActivityId(int) to get a global unique
+ * menu id to be used in menu.add(), and can call getMenuOriginalId(int) to get
+ * the original menu id. the example: class Hooker implements IActivityHooker {
+ * private static final int MENU_EXAMPLE = 1;
+ *
+ * @Override public boolean onCreateOptionsMenu(Menu menu) {
+ *           super.onCreateOptionsMenu(menu); menu.add(0,
+ *           getMenuActivityId(MENU_EXAMPLE), 0, android.R.string.ok); return
+ *           true; }
+ * @Override public boolean onOptionsItemSelected(MenuItem item) {
+ *           switch(getMenuOriginalId(item.getItemId())) { case MENU_EXAMPLE:
+ *           //do something return true; default: return false; } } }
+ */
+public interface IActivityHooker {
+
+    /**
+     * Will be called in Host Activity.onCreateOptionsMenu(Menu menu)
+     *
+     * @param menu
+     * @return
+     */
+    boolean onCreateOptionsMenu(Menu menu);
+
+    /**
+     * Will be called in Host Activity.onPrepareOptionsMenu(Menu menu)
+     *
+     * @param menu
+     * @return
+     */
+    boolean onPrepareOptionsMenu(Menu menu);
+
+    /**
+     * Will be called in Host Activity.onOptionsItemSelected(MenuItem item)
+     *
+     * @param item
+     * @return
+     */
+    boolean onOptionsItemSelected(MenuItem item);
+
+    /**
+     * Should be called before any other functions.
+     *
+     * @param context
+     * @param intent
+     */
+    void init(Activity context, Intent intent);
+
+    /**
+     * @return return activity set by init(Activity context, Intent intent)
+     */
+    Activity getContext();
+
+    /**
+     * @return return intent set by init(Activity context, Intent intent)
+     */
+    Intent getIntent();
+
+    /**
+     * IActivityHooker objects may show menus, but we should give a unique menu
+     * id to every menus. Hooker can call this function to get a global unique
+     * menu id to be used in menu.add()
+     *
+     * @param id
+     * @return
+     */
+    int getMenuActivityId(int id);
+
+    /**
+     * When onOptionsItemSelected is called, we can get menu's id from
+     * parameter. You can get the original menu id by calling this function.
+     *
+     * @param id
+     * @return
+     */
+    int getMenuOriginalId(int id);
+
+    /**
+     * Host activity will call this function to set parameter to hooker
+     * activity.
+     *
+     * @param key
+     * @param value
+     */
+    void setParameter(String key, Object value);
+}