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#4116 PdmUiListView: Scroll to the first selected item when activated

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This solution does not always work, but scrolls to the first selected item in most cases
This commit is contained in:
Magne Sjaastad 2019-02-21 22:04:07 +01:00
parent 760fcaef43
commit 24bda0fda2
5 changed files with 61 additions and 5 deletions
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16
Fwk/AppFwk/cafTests/cafTestApplication/ManyGroups.cpp
View File

@ -1,6 +1,7 @@
#include "ManyGroups.h"
#include "cafPdmUiTreeSelectionEditor.h"
#include "cafPdmUiListEditor.h"
CAF_PDM_SOURCE_INIT(ManyGroups, "LargeObject");
@ -34,6 +35,9 @@ ManyGroups::ManyGroups()
m_multiSelectList.v().push_back("First");
m_multiSelectList.v().push_back("Second");
m_multiSelectList.v().push_back("Third");
CAF_PDM_InitField(&m_singleStringWithManySelectableItems, "m_singleStringWithManySelectableItems", QString(""), "Text with many items", "", "Text tooltip", "");
m_singleStringWithManySelectableItems.uiCapability()->setUiEditorTypeName(caf::PdmUiListEditor::uiEditorTypeName());
}
//--------------------------------------------------------------------------------------------------
@ -62,6 +66,18 @@ QList<caf::PdmOptionItemInfo> ManyGroups::calculateValueOptions(const caf::PdmFi
{
QList<caf::PdmOptionItemInfo> options;
// Test code used to switch between two lists with different content, but same item count
if (fieldNeedingOptions == &m_singleStringWithManySelectableItems)
{
for (int i = 0; i < 100; i++)
{
QString text = QString("item %1").arg(i);
options.push_back(caf::PdmOptionItemInfo(text, text));
}
return options;
}
// Test code used to switch between two lists with different content, but same item count
if (fieldNeedingOptions == &m_multiSelectList)
{

1
Fwk/AppFwk/cafTests/cafTestApplication/ManyGroups.h
View File

@ -18,6 +18,7 @@ public:
caf::PdmProxyValueField<double> m_proxyDoubleField;
caf::PdmField<std::vector<QString> > m_multiSelectList;
caf::PdmField<QString> m_singleStringWithManySelectableItems;
caf::PdmField<bool> m_toggleField;
caf::PdmFieldHandle* objectToggleField() override;

17
Fwk/AppFwk/cafUserInterface/cafPdmUiFormLayoutObjectEditor.cpp
View File

@ -41,6 +41,7 @@
#include "cafPdmUiFieldEditorHandle.h"
#include "cafPdmUiFieldEditorHelper.h"
#include "cafPdmUiFieldHandle.h"
#include "cafPdmUiListEditor.h"
#include "cafPdmUiObjectHandle.h"
#include "cafPdmUiOrdering.h"
#include "cafPdmXmlObjectHandle.h"
@ -49,8 +50,9 @@
#include "QMinimizePanel.h"
#include <QGridLayout>
#include <QCoreApplication>
#include <QFrame>
#include <QGridLayout>
//--------------------------------------------------------------------------------------------------
///
@ -468,6 +470,19 @@ void caf::PdmUiFormLayoutObjectEditor::configureAndUpdateUi(const QString& uiCon
{
uiObject->onEditorWidgetsCreated();
}
// Process events to make sure the layout has completed before scrolling the list editor to current item
// If this step is omitted, the scrollTo method ends up at arbitrary positions
qApp->processEvents();
for (it = m_fieldViews.begin(); it != m_fieldViews.end(); ++it)
{
auto myObj = dynamic_cast<PdmUiListEditor*>(it->second);
if (myObj)
{
myObj->ensureCurrentItemIsVisible();
}
}
}
//--------------------------------------------------------------------------------------------------

25
Fwk/AppFwk/cafUserInterface/cafPdmUiListEditor.cpp
View File

@ -34,7 +34,6 @@
//
//##################################################################################################
#include "cafPdmUiListEditor.h"
#include "cafPdmUiDefaultObjectEditor.h"
@ -138,7 +137,8 @@ CAF_PDM_UI_FIELD_EDITOR_SOURCE_INIT(PdmUiListEditor);
//--------------------------------------------------------------------------------------------------
PdmUiListEditor::PdmUiListEditor() :
m_isEditOperationsAvailable(true),
m_optionItemCount(0)
m_optionItemCount(0),
m_isScrollToItemAllowed(true)
{
}
@ -149,6 +149,21 @@ PdmUiListEditor::~PdmUiListEditor()
{
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void PdmUiListEditor::ensureCurrentItemIsVisible()
{
if (m_isScrollToItemAllowed)
{
QModelIndex mi = m_listView->currentIndex();
if (mi.isValid())
{
m_listView->scrollTo(mi);
}
}
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
@ -266,6 +281,8 @@ void PdmUiListEditor::configureAndUpdateUi(const QString& uiConfigName)
m_listView->selectionModel()->blockSignals(false);
}
//ensureCurrentItemIsVisible();
}
//--------------------------------------------------------------------------------------------------
@ -306,6 +323,8 @@ void PdmUiListEditor::slotSelectionChanged(const QItemSelection & selected, cons
{
if (m_optionItemCount == 0) return;
m_isScrollToItemAllowed = false;
QVariant fieldValue = uiField()->uiValue();
if (fieldValue.type() == QVariant::Int || fieldValue.type() == QVariant::UInt)
{
@ -359,6 +378,8 @@ void PdmUiListEditor::slotSelectionChanged(const QItemSelection & selected, cons
this->setValueToField(valuesToSetInField);
}
m_isScrollToItemAllowed = true;
}
//--------------------------------------------------------------------------------------------------

7
Fwk/AppFwk/cafUserInterface/cafPdmUiListEditor.h
View File

@ -81,6 +81,8 @@ public:
PdmUiListEditor();
~PdmUiListEditor() override;
void ensureCurrentItemIsVisible();
protected:
QWidget* createEditorWidget(QWidget * parent) override;
QWidget* createLabelWidget(QWidget * parent) override;
@ -102,8 +104,9 @@ private:
QPointer<QLabel> m_label;
QPointer<QStringListModel> m_model;
bool m_isEditOperationsAvailable;
int m_optionItemCount;
bool m_isEditOperationsAvailable;
int m_optionItemCount;
bool m_isScrollToItemAllowed;
};