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[libcalamaresui] Add QML onActivate() and onLeave() calls.

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- This comes from the ExecutionViewStep, V2 loading, which
   notifies the QML that the QML is now active.
This commit is contained in:
Adriaan de Groot 2020-02-07 22:18:23 +01:00
parent 1f34c2834e
commit 39a5453904
1 changed files with 46 additions and 3 deletions
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49
src/libcalamaresui/viewpages/QmlViewStep.cpp
View file

@ -19,6 +19,7 @@
#include "QmlViewStep.h"
#include "Branding.h"
#include "ViewManager.h"
#include "utils/Dirs.h"
#include "utils/Logger.h"
@ -51,6 +52,36 @@ searchNames()
return names;
}
/// @brief State-change of the QML, for changeQMLState()
enum class QMLAction
{
Start,
Stop
};
/** @brief Tells the QML we activated or left it.
*
* If @p action is @c QMLAction::Start, calls onActivate in the QML.
* If @p action is @c QMLAction::Stop, calls onLeave in the QML.
*
* Sets *activatedInCalamares* property on the QML as well (to true
* if @p action is @c QMLAction::Start, false otherwise).
*/
static void
changeQMLState( QMLAction action, QQuickItem* item )
{
static const char propertyName[] = "activatedInCalamares";
bool activate = action == QMLAction::Start;
CalamaresUtils::callQMLFunction( item, activate ? "onActivate" : "onLeave" );
auto property = item->property( propertyName );
if ( property.isValid() && ( property.type() == QVariant::Bool ) && ( property.toBool() != activate ) )
{
item->setProperty( propertyName, activate );
}
}
namespace Calamares
{
@ -81,7 +112,6 @@ QmlViewStep::prettyName() const
}
bool
QmlViewStep::isAtBeginning() const
{
@ -114,13 +144,19 @@ QmlViewStep::jobs() const
void
QmlViewStep::onActivate()
{
// TODO: call into QML
if ( m_qmlObject )
{
changeQMLState( QMLAction::Start, m_qmlObject );
}
}
void
QmlViewStep::onLeave()
{
// TODO: call into QML
if ( m_qmlObject )
{
changeQMLState( QMLAction::Stop, m_qmlObject );
}
}
QWidget*
@ -181,6 +217,13 @@ QmlViewStep::showQml()
{
cDebug() << "showQml() called twice";
}
if ( ViewManager::instance()->currentStep() == this )
{
// We're alreay visible! Must have been slow QML loading, and we
// passed onActivate already.
changeQMLState( QMLAction::Start, m_qmlObject );
}
}