C++ class for device-specific code

Replace the device-specific functions with a class.  Move some of the
key handling (for log visibility toggling and rebooting) into the UI
class.  Fix up the key handling so there is less crosstalk between the
immediate keys and the queued keys (an increasing annoyance on
button-limited devices).

Change-Id: I698f6fd21c67a1e55429312a0484b6c393cad46f

1 files changed, 92 insertions, 0 deletions

diff --git a/default_device.cpp b/default_device.cpp
new file mode 100644
index 0000000..265ed07
--- /dev/null
+++ b/default_device.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#include <linux/input.h>
+
+#include "common.h"
+#include "device.h"
+#include "screen_ui.h"
+
+static const char* HEADERS[] = { "Volume up/down to move highlight;",
+                                 "enter button to select.",
+                                 "",
+                                 NULL };
+
+static const char* ITEMS[] =  {"reboot system now",
+                               "apply update from external storage",
+                               "apply update from cache",
+                               "wipe data/factory reset",
+                               "wipe cache partition",
+                               NULL };
+
+class DefaultUI : public ScreenRecoveryUI {
+  public:
+    virtual KeyAction CheckKey(int key) {
+        if (key == KEY_HOME) {
+            return TOGGLE;
+        }
+        return ENQUEUE;
+    }
+};
+
+class DefaultDevice : public Device {
+  public:
+    DefaultDevice() :
+        ui(new DefaultUI) {
+    }
+
+    RecoveryUI* GetUI() { return ui; }
+
+    int HandleMenuKey(int key, int visible) {
+        if (visible) {
+            switch (key) {
+              case KEY_DOWN:
+              case KEY_VOLUMEDOWN:
+                return kHighlightDown;
+
+              case KEY_UP:
+              case KEY_VOLUMEUP:
+                return kHighlightUp;
+
+              case KEY_ENTER:
+                return kInvokeItem;
+            }
+        }
+
+        return kNoAction;
+    }
+
+    BuiltinAction InvokeMenuItem(int menu_position) {
+        switch (menu_position) {
+          case 0: return REBOOT;
+          case 1: return APPLY_EXT;
+          case 2: return APPLY_CACHE;
+          case 3: return WIPE_DATA;
+          case 4: return WIPE_CACHE;
+          default: return NO_ACTION;
+        }
+    }
+
+    const char* const* GetMenuHeaders() { return HEADERS; }
+    const char* const* GetMenuItems() { return ITEMS; }
+
+  private:
+    RecoveryUI* ui;
+};
+
+Device* make_device() {
+    return new DefaultDevice();
+}