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[chromium-blink-merge.git] / components / infobars / core / infobar_container.cc
blob90ba064d4e0b6dca083a14c0e7c0c1589c5e166d
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "components/infobars/core/infobar_container.h"
7 #include <algorithm>
9 #include "base/auto_reset.h"
10 #include "base/logging.h"
11 #include "build/build_config.h"
12 #include "components/infobars/core/infobar.h"
13 #include "components/infobars/core/infobar_delegate.h"
15 namespace infobars {
17 InfoBarContainer::Delegate::~Delegate() {
20 InfoBarContainer::InfoBarContainer(Delegate* delegate)
21 : delegate_(delegate),
22 infobar_manager_(NULL),
23 ignore_infobar_state_changed_(false) {
26 InfoBarContainer::~InfoBarContainer() {
27 // RemoveAllInfoBarsForDestruction() should have already cleared our infobars.
28 DCHECK(infobars_.empty());
29 if (infobar_manager_)
30 infobar_manager_->RemoveObserver(this);
33 void InfoBarContainer::ChangeInfoBarManager(InfoBarManager* infobar_manager) {
34 if (infobar_manager_)
35 infobar_manager_->RemoveObserver(this);
38 // Ignore intermediate state changes. We'll manually trigger processing
39 // once we're finished.
40 base::AutoReset<bool> ignore_changes(&ignore_infobar_state_changed_, true);
42 // Hides all infobars in this container without animation.
43 while (!infobars_.empty()) {
44 InfoBar* infobar = infobars_.front();
45 // Inform the infobar that it's hidden. If it was already closing, this
46 // deletes it. Otherwise, this ensures the infobar will be deleted if
47 // it's closed while it's not in an InfoBarContainer.
48 infobar->Hide(false);
51 infobar_manager_ = infobar_manager;
52 if (infobar_manager_) {
53 infobar_manager_->AddObserver(this);
55 for (size_t i = 0; i < infobar_manager_->infobar_count(); ++i)
56 AddInfoBar(infobar_manager_->infobar_at(i), i, false);
60 // Now that everything is up to date, signal the delegate to re-layout.
61 OnInfoBarStateChanged(false);
64 int InfoBarContainer::GetVerticalOverlap(int* total_height) const {
65 // Our |total_height| is the sum of the preferred heights of the InfoBars
66 // contained within us plus the |vertical_overlap|.
67 int vertical_overlap = 0;
68 int next_infobar_y = 0;
70 for (InfoBars::const_iterator i(infobars_.begin()); i != infobars_.end();
71 ++i) {
72 InfoBar* infobar = *i;
73 next_infobar_y -= infobar->arrow_height();
74 vertical_overlap = std::max(vertical_overlap, -next_infobar_y);
75 next_infobar_y += infobar->total_height();
78 if (total_height)
79 *total_height = next_infobar_y + vertical_overlap;
80 return vertical_overlap;
83 void InfoBarContainer::UpdateInfoBarArrowTargetHeights() {
84 for (size_t i = 0; i < infobars_.size(); ++i) {
85 infobars_[i]->SetArrowTargetHeight(delegate_ ?
86 delegate_->ArrowTargetHeightForInfoBar(
87 i, const_cast<const InfoBar*>(infobars_[i])->animation()) : 0);
91 void InfoBarContainer::OnInfoBarStateChanged(bool is_animating) {
92 if (ignore_infobar_state_changed_)
93 return;
94 if (delegate_)
95 delegate_->InfoBarContainerStateChanged(is_animating);
96 UpdateInfoBarArrowTargetHeights();
97 PlatformSpecificInfoBarStateChanged(is_animating);
100 void InfoBarContainer::RemoveInfoBar(InfoBar* infobar) {
101 infobar->set_container(NULL);
102 InfoBars::iterator i(std::find(infobars_.begin(), infobars_.end(), infobar));
103 DCHECK(i != infobars_.end());
104 PlatformSpecificRemoveInfoBar(infobar);
105 infobars_.erase(i);
108 void InfoBarContainer::RemoveAllInfoBarsForDestruction() {
109 // Before we remove any children, we reset |delegate_|, so that no removals
110 // will result in us trying to call
111 // delegate_->InfoBarContainerStateChanged(). This is important because at
112 // this point |delegate_| may be shutting down, and it's at best unimportant
113 // and at worst disastrous to call that.
114 delegate_ = NULL;
115 ChangeInfoBarManager(NULL);
118 void InfoBarContainer::OnInfoBarAdded(InfoBar* infobar) {
119 AddInfoBar(infobar, infobars_.size(), true);
122 void InfoBarContainer::OnInfoBarRemoved(InfoBar* infobar, bool animate) {
123 infobar->Hide(animate);
124 UpdateInfoBarArrowTargetHeights();
127 void InfoBarContainer::OnInfoBarReplaced(InfoBar* old_infobar,
128 InfoBar* new_infobar) {
129 PlatformSpecificReplaceInfoBar(old_infobar, new_infobar);
130 InfoBars::const_iterator i(std::find(infobars_.begin(), infobars_.end(),
131 old_infobar));
132 DCHECK(i != infobars_.end());
133 size_t position = i - infobars_.begin();
134 old_infobar->Hide(false);
135 AddInfoBar(new_infobar, position, false);
138 void InfoBarContainer::OnManagerShuttingDown(InfoBarManager* manager) {
139 DCHECK_EQ(infobar_manager_, manager);
140 infobar_manager_->RemoveObserver(this);
141 infobar_manager_ = NULL;
144 void InfoBarContainer::AddInfoBar(InfoBar* infobar,
145 size_t position,
146 bool animate) {
147 DCHECK(std::find(infobars_.begin(), infobars_.end(), infobar) ==
148 infobars_.end());
149 DCHECK_LE(position, infobars_.size());
150 infobars_.insert(infobars_.begin() + position, infobar);
151 UpdateInfoBarArrowTargetHeights();
152 PlatformSpecificAddInfoBar(infobar, position);
153 infobar->set_container(this);
154 infobar->Show(animate);
157 } // namespace infobars