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// Copyright (c) 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/ui/search/search_model.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/ui/search/search_model_observer.h"
SearchModel::SearchModel() {
}
SearchModel::~SearchModel() {
}
// static.
bool SearchModel::ShouldChangeTopBarsVisibility(const State& old_state,
const State& new_state) {
// If mode has changed, only change top bars visibility if new mode is not
// |SEARCH_SUGGESTIONS| or |SEARCH_RESULTS|. Top bars visibility for
// these 2 modes is determined when the mode stays the same, and:
// - for |NTP/SERP| pages: by SearchBox API, or
// - for |DEFAULT| pages: by platform-specific implementation of
// |InstantOverlayController| when it shows/hides the Instant overlay.
return old_state.mode != new_state.mode ?
!new_state.mode.is_search() : new_state.mode.is_search();
}
void SearchModel::SetState(const State& new_state) {
DCHECK(chrome::IsInstantExtendedAPIEnabled())
<< "Please do not try to set the SearchModel mode without first "
<< "checking if Search is enabled.";
if (state_ == new_state)
return;
const State old_state = state_;
state_ = new_state;
FOR_EACH_OBSERVER(SearchModelObserver, observers_,
ModelChanged(old_state, state_));
}
void SearchModel::SetMode(const SearchMode& new_mode) {
DCHECK(chrome::IsInstantExtendedAPIEnabled())
<< "Please do not try to set the SearchModel mode without first "
<< "checking if Search is enabled.";
if (state_.mode == new_mode)
return;
const State old_state = state_;
state_.mode = new_mode;
// For |SEARCH_SUGGESTIONS| and |SEARCH_RESULTS| modes, SearchBox API will
// determine visibility of top bars via SetTopBarsVisible(); for other modes,
// top bars are always visible, if available.
if (!state_.mode.is_search())
state_.top_bars_visible = true;
FOR_EACH_OBSERVER(SearchModelObserver, observers_,
ModelChanged(old_state, state_));
}
void SearchModel::SetTopBarsVisible(bool visible) {
DCHECK(chrome::IsInstantExtendedAPIEnabled())
<< "Please do not try to set the SearchModel mode without first "
<< "checking if Search is enabled.";
if (state_.top_bars_visible == visible)
return;
const State old_state = state_;
state_.top_bars_visible = visible;
FOR_EACH_OBSERVER(SearchModelObserver, observers_,
ModelChanged(old_state, state_));
}
void SearchModel::AddObserver(SearchModelObserver* observer) {
observers_.AddObserver(observer);
}
void SearchModel::RemoveObserver(SearchModelObserver* observer) {
observers_.RemoveObserver(observer);
}
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