commit d530449e54bd327e9c26209ffa0490c6508afe6c
author Sen Jiang <senj@google.com> Fri Dec 09 16:20:49 2016 -0800
committer Sen Jiang <senj@google.com> Tue Dec 13 13:29:33 2016 -0800
tree 0b1d25af5cad4e0e4b1035b5dad3a86c06835e0a
parent d6a5005fcb1f2ea6cfbdcb424497b626aeab7e16

Add a stub recovery UI.

This allows recovery to work on devices without screen.
The stub recovery UI does nothing except print to stdout.

Test: write 'recovery\n--wipe_data\n--reason=wipe_data_from_ota\n'
      to misc and boot to recovery on a device without screen.
Bug: 33175036

Change-Id: Icde698aa2e2e29f4b3d0532dfd3c6a939ac2bc63

wear_ui.cpp

diff --git a/wear_ui.cpp b/wear_ui.cpp
index 0918ac4..11e5a71 100644
--- a/wear_ui.cpp
+++ b/wear_ui.cpp
@@ -190,8 +190,10 @@
     gr_flip();
 }
 
-void WearRecoveryUI::InitTextParams() {
-    ScreenRecoveryUI::InitTextParams();
+bool WearRecoveryUI::InitTextParams() {
+    if (!ScreenRecoveryUI::InitTextParams()) {
+        return false;
+    }
 
     text_cols_ = (gr_fb_width() - (outer_width * 2)) / char_width_;
 
@@ -199,15 +201,19 @@
     if (text_cols_ > kMaxCols) text_cols_ = kMaxCols;
 
     visible_text_rows = (gr_fb_height() - (outer_height * 2)) / char_height_;
+    return true;
 }
 
-void WearRecoveryUI::Init() {
-    ScreenRecoveryUI::Init();
+bool WearRecoveryUI::Init() {
+    if (!ScreenRecoveryUI::Init()) {
+        return false;
+    }
 
     LoadBitmap("icon_installing", &backgroundIcon[INSTALLING_UPDATE]);
     backgroundIcon[ERASING] = backgroundIcon[INSTALLING_UPDATE];
     LoadBitmap("icon_error", &backgroundIcon[ERROR]);
     backgroundIcon[NO_COMMAND] = backgroundIcon[ERROR];
+    return true;
 }
 
 void WearRecoveryUI::SetStage(int current, int max)