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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "statusbarmanager.h"
#include "imode.h"
#include "mainwindow.h"
#include "minisplitter.h"
#include "modemanager.h"
#include <utils/qtcassert.h>
#include <QHBoxLayout>
#include <QLabel>
#include <QResizeEvent>
#include <QSplitter>
#include <QStatusBar>
namespace Core {
const char kSettingsGroup[] = "StatusBar";
const char kLeftSplitWidthKey[] = "LeftSplitWidth";
static QPointer<QSplitter> m_splitter;
static QList<QPointer<QWidget>> m_statusBarWidgets;
static QList<QPointer<IContext>> m_contexts;
/*
Context that always returns the context of the active's mode widget (if available).
*/
class StatusBarContext : public IContext
{
public:
StatusBarContext(QObject *parent);
Context context() const final;
};
static QWidget *createWidget(QWidget *parent)
{
QWidget *w = new QWidget(parent);
w->setLayout(new QHBoxLayout);
w->setVisible(true);
w->layout()->setContentsMargins(0, 0, 0, 0);
return w;
}
static void createStatusBarManager()
{
QStatusBar *bar = ICore::statusBar();
m_splitter = new NonResizingSplitter(bar);
bar->insertPermanentWidget(0, m_splitter, 10);
m_splitter->setChildrenCollapsible(false);
// first
QWidget *w = createWidget(m_splitter);
w->layout()->setContentsMargins(0, 0, 3, 0);
m_splitter->addWidget(w);
m_statusBarWidgets.append(w);
QWidget *w2 = createWidget(m_splitter);
w2->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed);
m_splitter->addWidget(w2);
// second
w = createWidget(w2);
w2->layout()->addWidget(w);
m_statusBarWidgets.append(w);
// third
w = createWidget(w2);
w2->layout()->addWidget(w);
m_statusBarWidgets.append(w);
static_cast<QBoxLayout *>(w2->layout())->addStretch(1);
QWidget *rightCornerWidget = createWidget(bar);
bar->insertPermanentWidget(1, rightCornerWidget);
m_statusBarWidgets.append(rightCornerWidget);
auto statusContext = new StatusBarContext(bar);
statusContext->setWidget(bar);
ICore::addContextObject(statusContext);
QObject::connect(ICore::instance(), &ICore::saveSettingsRequested, [] {
QSettings *s = ICore::settings();
s->beginGroup(QLatin1String(kSettingsGroup));
s->setValue(QLatin1String(kLeftSplitWidthKey), m_splitter->sizes().at(0));
s->endGroup();
});
QObject::connect(ICore::instance(), &ICore::coreAboutToClose, [statusContext] {
delete statusContext;
// This is the catch-all on rampdown. Individual items may
// have been removed earlier by destroyStatusBarWidget().
for (const QPointer<IContext> &context : qAsConst(m_contexts)) {
ICore::removeContextObject(context);
delete context;
}
m_contexts.clear();
});
}
void StatusBarManager::addStatusBarWidget(QWidget *widget,
StatusBarPosition position,
const Context &ctx)
{
if (!m_splitter)
createStatusBarManager();
QTC_ASSERT(widget, return);
QTC_CHECK(widget->parent() == nullptr); // We re-parent, so user code does need / should not set it.
m_statusBarWidgets.at(position)->layout()->addWidget(widget);
auto context = new IContext;
context->setWidget(widget);
context->setContext(ctx);
m_contexts.append(context);
ICore::addContextObject(context);
}
void StatusBarManager::destroyStatusBarWidget(QWidget *widget)
{
QTC_ASSERT(widget, return);
const auto it = std::find_if(m_contexts.begin(), m_contexts.end(),
[widget](const auto &context) { return context->widget() == widget; });
if (it != m_contexts.end()) {
delete *it;
m_contexts.erase(it);
}
widget->setParent(nullptr);
delete widget;
}
void StatusBarManager::restoreSettings()
{
QSettings *s = ICore::settings();
s->beginGroup(QLatin1String(kSettingsGroup));
int leftSplitWidth = s->value(QLatin1String(kLeftSplitWidthKey), -1).toInt();
s->endGroup();
if (leftSplitWidth < 0) {
// size first split after its sizeHint + a bit of buffer
leftSplitWidth = m_splitter->widget(0)->sizeHint().width();
}
int sum = 0;
const QList<int> sizes = m_splitter->sizes();
for (const int w : sizes)
sum += w;
m_splitter->setSizes(QList<int>() << leftSplitWidth << (sum - leftSplitWidth));
}
StatusBarContext::StatusBarContext(QObject *parent)
: IContext(parent)
{
}
Context StatusBarContext::context() const
{
IMode *currentMode = ModeManager::currentMode();
QWidget *modeWidget = currentMode ? currentMode->widget() : nullptr;
if (modeWidget) {
if (IContext *context = ICore::contextObject(modeWidget))
return context->context();
}
return Context();
}
} // Core
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