Auto generate various shift states alphabet keyboard automatically

If any shift state variants of alphabet keyboard layout is not
specified in KeyboardSet.Element, it will be automatically generated
from base alphabet keyboard definition.

This change also
  * Eliminates KeyboardShiftState object from Keyboard.
  * Removes various set shift state methods from Keyboard.
  * Removes KeyboardSet.Element.elementAutoGenerate attribute.
  * Separates "sticky" Key.backgroundType to "stickyOff" and "stickyOn"
  * Add preserveCase flag to smiley, .com, and labeled special keys.
  * Rename KeyboardShiftState class to AlphabetShiftState.
  * Rename some attributes from *UppercaseLetter* to *ShiftedLetterHint*.
  * Introduce shiftedLetterActivated to Key.keyLabelFlags

Change-Id: I01a0a8efeeaa76820ae728a5bdfa8d02b6ce74b7

4 files changed, 62 insertions, 20 deletions

diff --git a/java/res/xml-sw600dp/key_smiley.xml b/java/res/xml-sw600dp/key_smiley.xml
index ee23a81ba..3430d7898 100644
--- a/java/res/xml-sw600dp/key_smiley.xml
+++ b/java/res/xml-sw600dp/key_smiley.xml
@@ -33,18 +33,18 @@
         >
             <Key
                 latin:keyLabel="-"
-                latin:keyLabelFlags="hasUppercaseLetter"
                 latin:keyHintLabel="_"
-                latin:moreKeys="_" />
+                latin:moreKeys="_"
+                latin:keyStyle="hasShiftedLetterHintStyle" />
         </case>
         <case
             latin:imeAction="actionSearch"
         >
             <Key
                 latin:keyLabel=":"
-                latin:keyLabelFlags="hasUppercaseLetter"
                 latin:keyHintLabel="+"
-                latin:moreKeys="+" />
+                latin:moreKeys="+"
+                latin:keyStyle="hasShiftedLetterHintStyle" />
         </case>
         <default>
             <Key
diff --git a/java/res/xml-sw600dp/key_styles_common.xml b/java/res/xml-sw600dp/key_styles_common.xml
index abba592b7..b55414786 100644
--- a/java/res/xml-sw600dp/key_styles_common.xml
+++ b/java/res/xml-sw600dp/key_styles_common.xml
@@ -38,13 +38,51 @@
                 latin:backgroundType="functional" />
         </default>
     </switch>
+    <switch>
+        <case
+            latin:keyboardSetElement="alphabetManualShifted|alphabetShiftLockShifted"
+        >
+            <key-style
+                latin:styleName="hasShiftedLetterHintStyle"
+                latin:keyLabelFlags="hasShiftedLetterHint|shiftedLetterActivated" />
+        </case>
+        <default>
+            <key-style
+                latin:styleName="hasShiftedLetterHintStyle"
+                latin:keyLabelFlags="hasShiftedLetterHint" />
+        </default>
+    </switch>
     <!-- Functional key styles -->
-    <key-style
-        latin:styleName="shiftKeyStyle"
-        latin:code="@integer/key_shift"
-        latin:keyIcon="iconShiftKey"
-        latin:keyActionFlags="noKeyPreview"
-        latin:backgroundType="sticky" />
+    <switch>
+        <case
+            latin:keyboardSetElement="alphabetManualShifted|alphabetAutomaticShifted"
+        >
+            <key-style
+                latin:styleName="shiftKeyStyle"
+                latin:code="@integer/key_shift"
+                latin:keyIcon="iconShiftKeyShifted"
+                latin:keyActionFlags="noKeyPreview"
+                latin:backgroundType="stickyOff" />
+        </case>
+        <case
+            latin:keyboardSetElement="alphabetShiftLocked|alphabetShiftLockShifted"
+        >
+            <key-style
+                latin:styleName="shiftKeyStyle"
+                latin:code="@integer/key_shift"
+                latin:keyIcon="iconShiftKeyShifted"
+                latin:keyActionFlags="noKeyPreview"
+                latin:backgroundType="stickyOn" />
+        </case>
+        <default>
+            <key-style
+                latin:styleName="shiftKeyStyle"
+                latin:code="@integer/key_shift"
+                latin:keyIcon="iconShiftKey"
+                latin:keyActionFlags="noKeyPreview"
+                latin:backgroundType="stickyOff" />
+        </default>
+    </switch>
     <key-style
         latin:styleName="deleteKeyStyle"
         latin:code="@integer/key_delete"
@@ -69,7 +107,7 @@
         latin:styleName="smileyKeyStyle"
         latin:keyLabel=":-)"
         latin:keyOutputText=":-) "
-        latin:keyLabelFlags="hasPopupHint"
+        latin:keyLabelFlags="hasPopupHint|preserveCase"
         latin:moreKeys="@string/more_keys_for_smiley"
         latin:maxMoreKeysColumn="5" />
     <key-style
@@ -95,30 +133,34 @@
         latin:styleName="toSymbolKeyStyle"
         latin:code="@integer/key_switch_alpha_symbol"
         latin:keyLabel="@string/label_to_symbol_key"
+        latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="toAlphaKeyStyle"
         latin:code="@integer/key_switch_alpha_symbol"
         latin:keyLabel="@string/label_to_alpha_key"
+        latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="toMoreSymbolKeyStyle"
         latin:code="@integer/key_shift"
         latin:keyLabel="@string/label_to_more_symbol_for_tablet_key"
+        latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="backFromMoreSymbolKeyStyle"
         latin:code="@integer/key_shift"
         latin:keyLabel="@string/label_to_symbol_key"
+        latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="comKeyStyle"
         latin:keyLabel="@string/keylabel_for_popular_domain"
-        latin:keyLabelFlags="fontNormal|hasPopupHint"
+        latin:keyLabelFlags="fontNormal|hasPopupHint|preserveCase"
         latin:keyOutputText="@string/keylabel_for_popular_domain"
         latin:moreKeys="@string/more_keys_for_popular_domain" />
 </merge>
diff --git a/java/res/xml-sw600dp/keys_apostrophe_dash.xml b/java/res/xml-sw600dp/keys_apostrophe_dash.xml
index 4eb82d24a..a53c1e4ab 100644
--- a/java/res/xml-sw600dp/keys_apostrophe_dash.xml
+++ b/java/res/xml-sw600dp/keys_apostrophe_dash.xml
@@ -33,16 +33,16 @@
         >
             <Key
                 latin:keyLabel="/"
-                latin:keyLabelFlags="hasUppercaseLetter"
                 latin:keyHintLabel=":"
-                latin:moreKeys=":" />
+                latin:moreKeys=":"
+                latin:keyStyle="hasShiftedLetterHintStyle" />
         </case>
         <default>
             <Key
                 latin:keyLabel="@string/keylabel_for_apostrophe"
-                latin:keyLabelFlags="hasUppercaseLetter"
                 latin:keyHintLabel="@string/keyhintlabel_for_apostrophe"
-                latin:moreKeys="@string/more_keys_for_apostrophe" />
+                latin:moreKeys="@string/more_keys_for_apostrophe"
+                latin:keyStyle="hasShiftedLetterHintStyle" />
         </default>
     </switch>
     <switch>
@@ -55,9 +55,9 @@
         <default>
             <Key
                 latin:keyLabel="@string/keylabel_for_dash"
-                latin:keyLabelFlags="hasUppercaseLetter"
                 latin:keyHintLabel="@string/keyhintlabel_for_dash"
-                latin:moreKeys="@string/more_keys_for_dash" />
+                latin:moreKeys="@string/more_keys_for_dash"
+                latin:keyStyle="hasShiftedLetterHintStyle" />
         </default>
     </switch>
 </merge>
diff --git a/java/res/xml-sw600dp/row_qwerty4.xml b/java/res/xml-sw600dp/row_qwerty4.xml
index bf6bcb1c6..b06508e37 100644
--- a/java/res/xml-sw600dp/row_qwerty4.xml
+++ b/java/res/xml-sw600dp/row_qwerty4.xml
@@ -45,9 +45,9 @@
             <default>
                 <Key
                     latin:keyLabel="/"
-                    latin:keyLabelFlags="hasUppercaseLetter"
                     latin:keyHintLabel="\@"
-                    latin:moreKeys="\@" />
+                    latin:moreKeys="\@"
+                    latin:keyStyle="hasShiftedLetterHintStyle" />
             </default>
         </switch>
         <Key