Pepper IME API for surrounding text retrieval.

ppapi/c/dev/ppb_text_input_dev.h

Index: ppapi/c/dev/ppb_text_input_dev.h
diff --git a/ppapi/c/dev/ppb_text_input_dev.h b/ppapi/c/dev/ppb_text_input_dev.h
index 286ec3457c4a0deb8948e9bc0e0ba62c6d20620f..972dd4b1260cde184c91c4d43e3df4e7e543ee7c 100644
--- a/ppapi/c/dev/ppb_text_input_dev.h
+++ b/ppapi/c/dev/ppb_text_input_dev.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From dev/ppb_text_input_dev.idl modified Wed Oct  5 14:06:02 2011. */
+/* From dev/ppb_text_input_dev.idl modified Mon Feb 27 14:16:39 2012. */
 
 #ifndef PPAPI_C_DEV_PPB_TEXT_INPUT_DEV_H_
 #define PPAPI_C_DEV_PPB_TEXT_INPUT_DEV_H_
@@ -16,7 +16,8 @@
 #include "ppapi/c/pp_stdint.h"
 
 #define PPB_TEXTINPUT_DEV_INTERFACE_0_1 "PPB_TextInput(Dev);0.1"
-#define PPB_TEXTINPUT_DEV_INTERFACE PPB_TEXTINPUT_DEV_INTERFACE_0_1
+#define PPB_TEXTINPUT_DEV_INTERFACE_0_2 "PPB_TextInput(Dev);0.2"
+#define PPB_TEXTINPUT_DEV_INTERFACE PPB_TEXTINPUT_DEV_INTERFACE_0_2
 
 /**
  * @file
@@ -66,7 +67,7 @@ PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_TextInput_Type, 4);
  * to the browser about the text input status of plugins, and functions for
  * controlling input method editors (IMEs).
  */
-struct PPB_TextInput_Dev_0_1 {
+struct PPB_TextInput_Dev_0_2 {
   /**
    * Informs the browser about the current text input mode of the plugin.
    * Typical use of this information in the browser is to properly
@@ -87,9 +88,51 @@ struct PPB_TextInput_Dev_0_1 {
    * Cancels the current composition in IME.
    */
   void (*CancelCompositionText)(PP_Instance instance);
+  /**
+   * In response to the <code>PPP_TextInput_Dev::RequestSurroundingText</code>
+   * call, informs the browser about the current text selection and surrounding
+   * text. <code>text</code> is an UTF-8 string that contains the current range
+   * of text selection in the plugin. <code>caret</code> is the byte-index of
+   * the caret poisition within <code>text</code>. <code>anchor</code> is the
+   * byte-index of the anchor position (i.e., if a range of text is selected,
+   * it is the other edge of selection diffrent from <code>caret</code>. If
+   * there are no selection, <code>anchor</code> is equal to <code>caret</code>.
+   *
+   * Typical use of this information in the browser is to enable "reconversion"
+   * features of IME that puts back the already commited text into the
+   * pre-commit composition state. Another use is to improve the precision
+   * of suggestion of IME by taking the context into account (e.g., if the caret
+   * looks to be on the beggining of a sentense, suggest capital letters in a
+   * virtual keyboard).
+   *
+   * When the focus is not on text, or when the plugin do not want to send the
+   * selection to the browser (e.g., concerning security), call this function
+   * setting <code>text</code> to an empty string and <code>caret</code> and
+   * <code>anchor</code> to zero.
+   */
+  void (*UpdateSurroundingText)(PP_Instance instance,
+                                const char* text,
+                                uint32_t caret,
+                                uint32_t anchor);
+  /**
+   * Informs the browser when a range of text selection is changed in a plugin.
+   * When the browser needs to know the content of the updated selection, it
+   * pings back by <code>PPP_TextInput_Dev::RequestSurroundingText</code>. The
+   * plugin then should send the information with
+   * <code>UpdateSurroundingText</code>.
+   */
+  void (*SelectionChanged)(PP_Instance instance);
 };
 
-typedef struct PPB_TextInput_Dev_0_1 PPB_TextInput_Dev;
+typedef struct PPB_TextInput_Dev_0_2 PPB_TextInput_Dev;
+
+struct PPB_TextInput_Dev_0_1 {
+  void (*SetTextInputType)(PP_Instance instance, PP_TextInput_Type type);
+  void (*UpdateCaretPosition)(PP_Instance instance,
+                              const struct PP_Rect* caret,
+                              const struct PP_Rect* bounding_box);
+  void (*CancelCompositionText)(PP_Instance instance);
+};
 /**
  * @}
  */