Instant: Rename 'preview' to 'overlay'

chrome/browser/instant/instant_overlay_model.cc

+// Copyright 2012 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 "chrome/browser/instant/instant_overlay_model.h"
+
+#include "chrome/browser/instant/instant_controller.h"
+#include "chrome/browser/instant/instant_overlay_model_observer.h"
+
+InstantOverlayModel::InstantOverlayModel(InstantController* controller)
+  : height_(0),
+    height_units_(INSTANT_SIZE_PIXELS),
+    overlay_contents_(NULL),
+    controller_(controller) {
+}
+
+InstantOverlayModel::~InstantOverlayModel() {
+}
+
+void InstantOverlayModel::SetOverlayState(const chrome::search::Mode& mode,
+                                          int height,
+                                          InstantSizeUnits height_units) {
+  if (mode_.mode == mode.mode && height_ == height &&
+      height_units_ == height_units) {
+    // Mode::mode hasn't changed, but perhaps bits that we ignore (such as
+    // Mode::origin) have. Update |mode_| anyway, so it's consistent with the
+    // argument (so mode() doesn't return something unexpected).
+    mode_ = mode;
+    return;
+  }
+
+  DVLOG(1) << "SetOverlayState: " << mode_.mode << " to " << mode.mode;
+  mode_ = mode;
+  height_ = height;
+  height_units_ = height_units;
+
+  FOR_EACH_OBSERVER(InstantOverlayModelObserver, observers_,
+                    OverlayStateChanged(*this));
+}
+
+void InstantOverlayModel::SetOverlayContents(
+    content::WebContents* overlay_contents) {
+  if (overlay_contents_ == overlay_contents)
+    return;
+
+  overlay_contents_ = overlay_contents;
+
+  FOR_EACH_OBSERVER(InstantOverlayModelObserver, observers_,
+                    OverlayStateChanged(*this));
+}
+
+content::WebContents* InstantOverlayModel::GetOverlayContents() const {
+  // |controller_| maybe NULL durning tests.
+  if (controller_)
+    return controller_->GetOverlayContents();
+  return overlay_contents_;
+}
+
+void InstantOverlayModel::AddObserver(InstantOverlayModelObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void InstantOverlayModel::RemoveObserver(
+    InstantOverlayModelObserver* observer) {
+  observers_.RemoveObserver(observer);
+}