Add autoresize capability to chromium.

content/renderer/render_view_impl.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 633 matching lines @@
     IPC_MESSAGE_HANDLER(ViewMsg_SwapOut, OnSwapOut)
     IPC_MESSAGE_HANDLER(ViewMsg_ClosePage, OnClosePage)
     IPC_MESSAGE_HANDLER(ViewMsg_ThemeChanged, OnThemeChanged)
     IPC_MESSAGE_HANDLER(ViewMsg_DisassociateFromPopupCount,
                         OnDisassociateFromPopupCount)
     IPC_MESSAGE_HANDLER(ViewMsg_MoveOrResizeStarted, OnMoveOrResizeStarted)
     IPC_MESSAGE_HANDLER(ViewMsg_ClearFocusedNode, OnClearFocusedNode)
     IPC_MESSAGE_HANDLER(ViewMsg_SetBackground, OnSetBackground)
     IPC_MESSAGE_HANDLER(ViewMsg_EnablePreferredSizeChangedMode,
                         OnEnablePreferredSizeChangedMode)
+    IPC_MESSAGE_HANDLER(ViewMsg_EnableAutoResize, OnEnableAutoResize)
     IPC_MESSAGE_HANDLER(ViewMsg_DisableScrollbarsForSmallWindows,
                         OnDisableScrollbarsForSmallWindows)
     IPC_MESSAGE_HANDLER(ViewMsg_SetRendererPrefs, OnSetRendererPrefs)
     IPC_MESSAGE_HANDLER(ViewMsg_MediaPlayerActionAt, OnMediaPlayerActionAt)
     IPC_MESSAGE_HANDLER(ViewMsg_SetActive, OnSetActive)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewMsg_SetWindowVisibility, OnSetWindowVisibility)
     IPC_MESSAGE_HANDLER(ViewMsg_WindowFrameChanged, OnWindowFrameChanged)
     IPC_MESSAGE_HANDLER(ViewMsg_PluginImeCompositionCompleted,
                         OnPluginImeCompositionCompleted)
@@ skipping 1072 matching lines @@
 void RenderViewImpl::focusPrevious() {
   Send(new ViewHostMsg_TakeFocus(routing_id_, true));
 }
 
 void RenderViewImpl::focusedNodeChanged(const WebNode& node) {
   Send(new ViewHostMsg_FocusedNodeChanged(routing_id_, IsEditableNode(node)));
 
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, FocusedNodeChanged(node));
 }
 
+void RenderViewImpl::autoSizeChanged(const WebSize& new_size) {
+  Send(new ViewHostMsg_DidContentsPreferredSizeChange(routing_id_,

[darin (slow to review), 2011/11/28 16:53:55]

nit: DidChangeContentsPreferredSize or ContentsPreferredSizeChanged

DidContentsPreferredSizeChange sounds like it is asking a question, but that
isn't a question the browser process can answer.

[jennb, 2011/11/28 18:02:24]

Maybe move the verb right after Did, i.e. DidChangeContentsPreferredSize?

[levin, 2011/11/28 18:44:56]

I was re-using an existing message (which I think follows a pattern of
"ViewHostMsg_Did*" to indicate an event) but I can see how the name may be
confusing. I will create a new message for my case since the view host may want
to handle it differently.

+                                                      new_size));
+}
+
+void RenderViewImpl::didUpdateLayout() {
+  // We don't always want to set up a timer, only if we've been put in that
+  // mode by getting a |ViewMsg_EnablePreferredSizeChangedMode|
+  // message.
+  if (!send_preferred_size_changes_ || !webview())
+    return;
+
+  if (check_preferred_size_timer_.IsRunning())
+    return;
+  check_preferred_size_timer_.Start(FROM_HERE,
+                                    TimeDelta::FromMilliseconds(0), this,
+                                    &RenderViewImpl::CheckPreferredSize);
+}
+
 void RenderViewImpl::navigateBackForwardSoon(int offset) {
   Send(new ViewHostMsg_GoToEntryAtOffset(routing_id_, offset));
 }
 
 int RenderViewImpl::historyBackListCount() {
   return history_list_offset_ < 0 ? 0 : history_list_offset_;
 }
 
 int RenderViewImpl::historyForwardListCount() {
   return history_list_length_ - historyBackListCount() - 1;
@@ skipping 1088 matching lines @@
       frame, context, world_id);
 }
 
 void RenderViewImpl::willReleaseScriptContext(WebFrame* frame,
                                               v8::Handle<v8::Context> context,
                                               int world_id) {
   content::GetContentClient()->renderer()->WillReleaseScriptContext(
       frame, context, world_id);
 }
 
-void RenderViewImpl::didUpdateLayout(WebFrame* frame) {
-  // We don't always want to set up a timer, only if we've been put in that
-  // mode by getting a |ViewMsg_EnablePreferredSizeChangedMode|
-  // message.
-  if (!send_preferred_size_changes_ || !webview())
-    return;
-
-  if (check_preferred_size_timer_.IsRunning())
-    return;
-  check_preferred_size_timer_.Start(FROM_HERE,
-                                    TimeDelta::FromMilliseconds(0), this,
-                                    &RenderViewImpl::CheckPreferredSize);
-}
-
 void RenderViewImpl::CheckPreferredSize() {
   // We don't always want to send the change messages over IPC, only if we've
   // been put in that mode by getting a |ViewMsg_EnablePreferredSizeChangedMode|
   // message.
   if (!send_preferred_size_changes_ || !webview())
     return;
 
   gfx::Size size(webview()->mainFrame()->contentsPreferredWidth(),
                  webview()->mainFrame()->documentElementScrollHeight());
 
@@ skipping 935 matching lines @@
     file_chooser_completions_.front()->completion->didChooseFile(ws_file_names);
   file_chooser_completions_.pop_front();
 
   // If there are more pending file chooser requests, schedule one now.
   if (!file_chooser_completions_.empty()) {
     Send(new ViewHostMsg_RunFileChooser(routing_id_,
         file_chooser_completions_.front()->params));
   }
 }
 
+void RenderViewImpl::OnEnableAutoResize(const gfx::Size& min_size,
+                                        const gfx::Size& max_size) {
+  DCHECK(!send_preferred_size_changes_);
+  DCHECK(disable_scrollbars_size_limit_.IsEmpty());
+  if (!webview())
+    return;
+  webview()->enableAutoSizeMode(true, min_size, max_size);
+}
+
 void RenderViewImpl::OnEnablePreferredSizeChangedMode() {
   if (send_preferred_size_changes_)
     return;
   send_preferred_size_changes_ = true;
 
   // Start off with an initial preferred size notification (in case
   // |didUpdateLayout| was already called).
   if (webview())
-    didUpdateLayout(webview()->mainFrame());
+    didUpdateLayout();
 }
 
 void RenderViewImpl::OnDisableScrollbarsForSmallWindows(
     const gfx::Size& disable_scrollbar_size_limit) {
   disable_scrollbars_size_limit_ = disable_scrollbar_size_limit;
 }
 
 void RenderViewImpl::OnSetRendererPrefs(
     const content::RendererPreferences& renderer_prefs) {
   renderer_preferences_ = renderer_prefs;
@@ skipping 888 matching lines @@
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit(
     const IPC::ChannelHandle& channel_handle) {
   DCHECK(!java_bridge_dispatcher_.get());
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this, channel_handle));
 #endif
 }