Add Android AX functions to set the value and selection of a text field.

content/renderer/accessibility/renderer_accessibility_complete.cc

Index: content/renderer/accessibility/renderer_accessibility_complete.cc
diff --git a/content/renderer/accessibility/renderer_accessibility_complete.cc b/content/renderer/accessibility/renderer_accessibility_complete.cc
index 28536b03649a14acd8ad1699150069d160bcf8b6..8cab05a1bfeb62dda8bde452b6d7f418e31fe838 100644
--- a/content/renderer/accessibility/renderer_accessibility_complete.cc
+++ b/content/renderer/accessibility/renderer_accessibility_complete.cc
@@ -8,6 +8,7 @@
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
+#include "base/strings/utf_string_conversions.h"
 #include "content/renderer/accessibility/blink_ax_enum_conversion.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_view_impl.h"
@@ -80,6 +81,7 @@ bool RendererAccessibilityComplete::OnMessageReceived(
                         OnScrollToPoint)
     IPC_MESSAGE_HANDLER(AccessibilityMsg_SetTextSelection,
                         OnSetTextSelection)
+    IPC_MESSAGE_HANDLER(AccessibilityMsg_SetValue, OnSetValue)
     IPC_MESSAGE_HANDLER(AccessibilityMsg_HitTest, OnHitTest)
     IPC_MESSAGE_HANDLER(AccessibilityMsg_Reset, OnReset)
     IPC_MESSAGE_HANDLER(AccessibilityMsg_FatalError, OnFatalError)
@@ -377,15 +379,24 @@ void RendererAccessibilityComplete::OnSetTextSelection(
     return;
   }
 
-  // TODO(dmazzoni): support elements other than <input>.
-  blink::WebNode node = obj.node();
-  if (!node.isNull() && node.isElementNode()) {
-    blink::WebElement element = node.to<blink::WebElement>();
-    blink::WebInputElement* input_element =
-        blink::toWebInputElement(&element);
-    if (input_element && input_element->isTextField())
-      input_element->setSelectionRange(start_offset, end_offset);
+  obj.setSelectedTextRange(start_offset, end_offset);
+}
+
+void RendererAccessibilityComplete::OnSetValue(
+    int acc_obj_id, base::string16 value) {

[nasko, 2014/10/27 17:18:25]

Each parameter must be on its own line.

[dmazzoni, 2014/11/04 23:22:53]

Done.

+  const WebDocument& document = GetMainDocument();
+  if (document.isNull())
+    return;
+
+  WebAXObject obj = document.accessibilityObjectFromID(acc_obj_id);
+  if (obj.isDetached()) {
+#ifndef NDEBUG
+    LOG(WARNING) << "SetTextSelection on invalid object id " << acc_obj_id;
+#endif
+    return;
   }
+
+  obj.setValue(value);
 }
 
 void RendererAccessibilityComplete::OnHitTest(gfx::Point point) {