conversation view zooming

Zoom is enabled on the entire conversation using the built-in
WebView mechanism.

Wide messages are individually best-effort shrunken to
fit-width.

Start a custom ViewGroup to hold both message headers and the
single WebView. A common view parent makes input handling easy:
the WebView drives scroll position, and position is relayed
to the custom ViewGroup to cheaply shift around headers without
a full relayout. For now, all headers are inflated at once, but
soon they can be recycled depending on the virtual scroll
viewport.

Change-Id: I92555f9b79e10630457b17ca970ab9a2e9028e80

1 files changed, 4 insertions, 0 deletions

diff --git a/proguard.flags b/proguard.flags
index 61b14fe66..6996693f4 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -31,3 +31,7 @@
 -keepclasseswithmembers class com.android.mail.ui.AnimatingItemView {
   *** setAnimatedHeight(...);
 }
+
+-keepclasseswithmembers class com.android.mail.ui.ConversationViewFragment$MailJsBridge {
+  public <methods>;
+}