text: Add show/hide_input_panel requests

Allows to show/hide the input panel (virtual keyboard) more independent
of focus (some applications might to require additionaly click on a
focused entry to show the input panel).

Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>

protocol/text.xml

@@ -140,6 +140,16 @@
     </request>
     <request name="commit">
     </request>
+    <request name="show_input_panel">
+      <description summary="show input panels">
+        Requests input panels (virtual keyboard) to show.
+      </description>
+    </request>
+    <request name="hide_input_panel">
+      <description summary="hide input panels">
+        Requests input panels (virtual keyboard) to hide.
+      </description>
+    </request>
     <event name="commit_string">
       <description summary="commit">
         Notify when text should be inserted into the editor widget. The text
@@ -248,6 +258,12 @@
         destroyed.
       </description>
     </event>
+    <event name="input_panel_state">
+      <description summary="state of the input panel">
+        Notify when the visibility state of the input panel changed.
+      </description>
+      <arg name="state" type="uint"/>
+    </event>
   </interface>
 
   <interface name="text_model_factory" version="1">