Implement a standalone file manager activity.

Change-Id: Iaf86ef416b979cea4ab3890d3a26f09741392c3d

1 files changed, 152 insertions, 0 deletions

diff --git a/packages/DocumentsUI/src/com/android/documentsui/BaseActivity.java b/packages/DocumentsUI/src/com/android/documentsui/BaseActivity.java
new file mode 100644
index 0000000..a8a0c1d
--- /dev/null
+++ b/packages/DocumentsUI/src/com/android/documentsui/BaseActivity.java
@@ -0,0 +1,152 @@
+/*
+ * 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.documentsui;
+
+import java.util.HashMap;
+import java.util.List;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.pm.ResolveInfo;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.SparseArray;
+
+import com.android.documentsui.model.DocumentInfo;
+import com.android.documentsui.model.DocumentStack;
+import com.android.documentsui.model.DurableUtils;
+import com.android.documentsui.model.RootInfo;
+import com.google.common.collect.Maps;
+
+abstract class BaseActivity extends Activity {
+
+    public abstract State getDisplayState();
+    public abstract RootInfo getCurrentRoot();
+    public abstract void onStateChanged();
+    public abstract void setRootsDrawerOpen(boolean open);
+    public abstract void onDocumentPicked(DocumentInfo doc);
+    public abstract void onDocumentsPicked(List<DocumentInfo> docs);
+    public abstract DocumentInfo getCurrentDirectory();
+    public abstract void setPending(boolean pending);
+    public abstract void onStackPicked(DocumentStack stack);
+    public abstract void onPickRequested(DocumentInfo pickTarget);
+    public abstract void onAppPicked(ResolveInfo info);
+    public abstract void onRootPicked(RootInfo root, boolean closeDrawer);
+    public abstract void onSaveRequested(DocumentInfo replaceTarget);
+    public abstract void onSaveRequested(String mimeType, String displayName);
+
+    public static BaseActivity get(Fragment fragment) {
+        return (BaseActivity) fragment.getActivity();
+    }
+
+    public static class State implements android.os.Parcelable {
+        public int action;
+        public String[] acceptMimes;
+
+        /** Explicit user choice */
+        public int userMode = MODE_UNKNOWN;
+        /** Derived after loader */
+        public int derivedMode = MODE_LIST;
+
+        /** Explicit user choice */
+        public int userSortOrder = SORT_ORDER_UNKNOWN;
+        /** Derived after loader */
+        public int derivedSortOrder = SORT_ORDER_DISPLAY_NAME;
+
+        public boolean allowMultiple = false;
+        public boolean showSize = false;
+        public boolean localOnly = false;
+        public boolean forceAdvanced = false;
+        public boolean showAdvanced = false;
+        public boolean stackTouched = false;
+        public boolean restored = false;
+
+        /** Current user navigation stack; empty implies recents. */
+        public DocumentStack stack = new DocumentStack();
+        /** Currently active search, overriding any stack. */
+        public String currentSearch;
+
+        /** Instance state for every shown directory */
+        public HashMap<String, SparseArray<Parcelable>> dirState = Maps.newHashMap();
+
+        public static final int ACTION_OPEN = 1;
+        public static final int ACTION_CREATE = 2;
+        public static final int ACTION_GET_CONTENT = 3;
+        public static final int ACTION_OPEN_TREE = 4;
+        public static final int ACTION_MANAGE = 5;
+        public static final int ACTION_MANAGE_ALL = 6;
+
+        public static final int MODE_UNKNOWN = 0;
+        public static final int MODE_LIST = 1;
+        public static final int MODE_GRID = 2;
+
+        public static final int SORT_ORDER_UNKNOWN = 0;
+        public static final int SORT_ORDER_DISPLAY_NAME = 1;
+        public static final int SORT_ORDER_LAST_MODIFIED = 2;
+        public static final int SORT_ORDER_SIZE = 3;
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel out, int flags) {
+            out.writeInt(action);
+            out.writeInt(userMode);
+            out.writeStringArray(acceptMimes);
+            out.writeInt(userSortOrder);
+            out.writeInt(allowMultiple ? 1 : 0);
+            out.writeInt(showSize ? 1 : 0);
+            out.writeInt(localOnly ? 1 : 0);
+            out.writeInt(forceAdvanced ? 1 : 0);
+            out.writeInt(showAdvanced ? 1 : 0);
+            out.writeInt(stackTouched ? 1 : 0);
+            out.writeInt(restored ? 1 : 0);
+            DurableUtils.writeToParcel(out, stack);
+            out.writeString(currentSearch);
+            out.writeMap(dirState);
+        }
+
+        public static final Creator<State> CREATOR = new Creator<State>() {
+            @Override
+            public State createFromParcel(Parcel in) {
+                final State state = new State();
+                state.action = in.readInt();
+                state.userMode = in.readInt();
+                state.acceptMimes = in.readStringArray();
+                state.userSortOrder = in.readInt();
+                state.allowMultiple = in.readInt() != 0;
+                state.showSize = in.readInt() != 0;
+                state.localOnly = in.readInt() != 0;
+                state.forceAdvanced = in.readInt() != 0;
+                state.showAdvanced = in.readInt() != 0;
+                state.stackTouched = in.readInt() != 0;
+                state.restored = in.readInt() != 0;
+                DurableUtils.readFromParcel(in, state.stack);
+                state.currentSearch = in.readString();
+                in.readMap(state.dirState, null);
+                return state;
+            }
+
+            @Override
+            public State[] newArray(int size) {
+                return new State[size];
+            }
+        };
+    }
+}