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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "basehoverhandler.h"
#include "itexteditor.h"
#include "basetexteditor.h"
#include "displaysettings.h"
#include "tooltip.h"
#include "tipcontents.h"
#include <coreplugin/icore.h>
#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/helpmanager.h>
#include <coreplugin/id.h>
#include <debugger/debuggerconstants.h>
#include <QtCore/QPoint>
using namespace TextEditor;
using namespace Core;
BaseHoverHandler::BaseHoverHandler(QObject *parent) : QObject(parent), m_diagnosticTooltip(false)
{
// Listen for editor opened events in order to connect to tooltip/helpid requests
connect(ICore::editorManager(), SIGNAL(editorOpened(Core::IEditor *)),
this, SLOT(editorOpened(Core::IEditor *)));
}
BaseHoverHandler::~BaseHoverHandler()
{}
void BaseHoverHandler::editorOpened(Core::IEditor *editor)
{
if (acceptEditor(editor)) {
BaseTextEditor *textEditor = qobject_cast<BaseTextEditor *>(editor);
if (textEditor) {
connect(textEditor, SIGNAL(tooltipRequested(TextEditor::ITextEditor*, QPoint, int)),
this, SLOT(showToolTip(TextEditor::ITextEditor*, QPoint, int)));
connect(textEditor, SIGNAL(contextHelpIdRequested(TextEditor::ITextEditor*, int)),
this, SLOT(updateContextHelpId(TextEditor::ITextEditor*, int)));
}
}
}
void BaseHoverHandler::showToolTip(TextEditor::ITextEditor *editor, const QPoint &point, int pos)
{
BaseTextEditorWidget *baseEditor = baseTextEditor(editor);
if (!baseEditor)
return;
editor->setContextHelpId(QString());
process(editor, pos);
operateTooltip(editor, point);
}
void BaseHoverHandler::updateContextHelpId(TextEditor::ITextEditor *editor, int pos)
{
BaseTextEditorWidget *baseEditor = baseTextEditor(editor);
if (!baseEditor)
return;
// If the tooltip is visible and there is a help match, this match is used to update
// the help id. Otherwise, let the identification process happen.
if (!ToolTip::instance()->isVisible() || !lastHelpItemIdentified().isValid())
process(editor, pos);
if (lastHelpItemIdentified().isValid())
editor->setContextHelpId(lastHelpItemIdentified().helpId());
else
editor->setContextHelpId(QString()); // Make sure it's an empty string.
}
void BaseHoverHandler::setToolTip(const QString &tooltip)
{ m_toolTip = tooltip; }
const QString &BaseHoverHandler::toolTip() const
{ return m_toolTip; }
void BaseHoverHandler::appendToolTip(const QString &extension)
{ m_toolTip.append(extension); }
void BaseHoverHandler::addF1ToToolTip()
{
m_toolTip = QString(QLatin1String("<table><tr><td valign=middle>%1</td><td> "
"<img src=\":/texteditor/images/f1.png\"></td>"
"</tr></table>")).arg(m_toolTip);
}
void BaseHoverHandler::setIsDiagnosticTooltip(bool isDiagnosticTooltip)
{
m_diagnosticTooltip = isDiagnosticTooltip;
}
bool BaseHoverHandler::isDiagnosticTooltip() const
{
return m_diagnosticTooltip;
}
void BaseHoverHandler::setLastHelpItemIdentified(const HelpItem &help)
{ m_lastHelpItemIdentified = help; }
const HelpItem &BaseHoverHandler::lastHelpItemIdentified() const
{ return m_lastHelpItemIdentified; }
void BaseHoverHandler::clear()
{
m_diagnosticTooltip = false;
m_toolTip.clear();
m_lastHelpItemIdentified = HelpItem();
}
void BaseHoverHandler::process(ITextEditor *editor, int pos)
{
clear();
identifyMatch(editor, pos);
decorateToolTip();
}
void BaseHoverHandler::decorateToolTip()
{
if (Qt::mightBeRichText(toolTip()))
setToolTip(Qt::escape(toolTip()));
if (!isDiagnosticTooltip() && lastHelpItemIdentified().isValid()) {
const QString &contents = lastHelpItemIdentified().extractContent(false);
if (!contents.isEmpty()) {
setToolTip(Qt::escape(toolTip()));
appendToolTip(contents);
addF1ToToolTip();
}
}
}
void BaseHoverHandler::operateTooltip(ITextEditor *editor, const QPoint &point)
{
if (m_toolTip.isEmpty())
ToolTip::instance()->hide();
else
ToolTip::instance()->show(point, TextContent(m_toolTip), editor->widget());
}
BaseTextEditorWidget *BaseHoverHandler::baseTextEditor(ITextEditor *editor)
{
if (!editor)
return 0;
return qobject_cast<BaseTextEditorWidget *>(editor->widget());
}
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