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Reset form action

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This commit is contained in:
Jakub Melka 2020-05-28 19:06:27 +02:00
parent 6c43e92bc0
commit 702ee98316
3 changed files with 164 additions and 12 deletions
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151
PdfForQtLib/sources/pdfform.cpp
View File

@ -911,6 +911,13 @@ bool PDFFormField::setValue(const SetValueParameters& parameters)
return false;
}
void PDFFormField::resetValue(const ResetValueParameters& parameters)
{
Q_UNUSED(parameters);
// Default behaviour: do nothing
}
PDFFormWidget::PDFFormWidget(PDFObjectReference page, PDFObjectReference widget, PDFFormField* parentField, PDFAnnotationAdditionalActions actions) :
m_page(page),
m_widget(widget),
@ -1047,6 +1054,41 @@ bool PDFFormFieldButton::setValue(const SetValueParameters& parameters)
return true;
}
void PDFFormFieldButton::resetValue(const ResetValueParameters& parameters)
{
// Do not allow to reset value of push buttons
if (getFlags().testFlag(PushButton))
{
return;
}
Q_ASSERT(parameters.modifier);
Q_ASSERT(parameters.formManager);
PDFObject defaultValue = getDefaultValue();
PDFDocumentBuilder* builder = parameters.modifier->getBuilder();
parameters.modifier->markFormFieldChanged();
builder->setFormFieldValue(getSelfReference(), defaultValue);
PDFDocumentDataLoaderDecorator loader(parameters.formManager->getDocument());
QByteArray defaultState = loader.readString(defaultValue);
for (const PDFFormWidget& formWidget : getWidgets())
{
QByteArray onState = PDFFormFieldButton::getOnAppearanceState(parameters.formManager, &formWidget);
if (defaultState == onState)
{
builder->setAnnotationAppearanceState(formWidget.getWidget(), onState);
}
else
{
QByteArray offState = PDFFormFieldButton::getOffAppearanceState(parameters.formManager, &formWidget);
builder->setAnnotationAppearanceState(formWidget.getWidget(), offState);
}
parameters.modifier->markAnnotationsChanged();
}
}
PDFFormManager::PDFFormManager(PDFDrawWidgetProxy* proxy, QObject* parent) :
BaseClass(parent),
m_proxy(proxy),
@ -1712,6 +1754,57 @@ PDFFormFieldWidgetEditor* PDFFormManager::getEditor(const PDFFormField* formFiel
return nullptr;
}
void PDFFormManager::performResetAction(const PDFActionResetForm* action)
{
Q_ASSERT(action);
Q_ASSERT(m_document);
PDFDocumentModifier modifier(m_document);
modifier.getBuilder()->setFormManager(this);
auto resetFieldValue = [this, action, &modifier](PDFFormField* formField)
{
const PDFFormAction::FieldList& fieldList = action->getFieldList();
// Akceptujeme form field dle daného filtru?
bool accept = false;
bool isInFieldList = std::find(fieldList.fieldReferences.cbegin(), fieldList.fieldReferences.cend(), formField->getSelfReference()) != fieldList.fieldReferences.cend() ||
fieldList.qualifiedNames.contains(formField->getName(PDFFormField::NameType::FullyQualified));
switch (action->getFieldScope())
{
case PDFFormAction::FieldScope::All:
accept = true;
break;
case PDFFormAction::FieldScope::Include:
accept = isInFieldList;
break;
case PDFFormAction::FieldScope::Exclude:
accept = !isInFieldList;
break;
default:
Q_ASSERT(false);
break;
}
if (accept)
{
PDFFormField::ResetValueParameters parameters;
parameters.formManager = this;
parameters.modifier = &modifier;
formField->resetValue(parameters);
}
};
modify(resetFieldValue);
if (modifier.finalize())
{
emit documentModified(PDFModifiedDocument(modifier.getDocument(), nullptr, modifier.getFlags()));
}
}
PDFFormFieldWidgetEditor::PDFFormFieldWidgetEditor(PDFFormManager* formManager, PDFFormWidget formWidget) :
m_formManager(formManager),
m_formWidget(formWidget),
@ -3346,12 +3439,6 @@ int PDFTextEditPseudowidget::getCursorLineDown() const
bool PDFFormFieldText::setValue(const SetValueParameters& parameters)
{
// Do not allow to set value to push buttons
if (getFlags().testFlag(PushButton))
{
return false;
}
// If form field is readonly, and scope is user (form field is changed by user,
// not by calculated value), then we must not allow value change.
if (getFlags().testFlag(ReadOnly) && parameters.scope == SetValueParameters::Scope::User)
@ -3377,6 +3464,25 @@ bool PDFFormFieldText::setValue(const SetValueParameters& parameters)
return true;
}
void PDFFormFieldText::resetValue(const ResetValueParameters& parameters)
{
Q_ASSERT(parameters.formManager);
Q_ASSERT(parameters.modifier);
PDFObject defaultValue = getDefaultValue();
PDFDocumentBuilder* builder = parameters.modifier->getBuilder();
parameters.modifier->markFormFieldChanged();
builder->setFormFieldValue(getSelfReference(), defaultValue);
m_value = defaultValue;
// Change widget appearance states
for (const PDFFormWidget& formWidget : getWidgets())
{
builder->updateAnnotationAppearanceStreams(formWidget.getWidget());
parameters.modifier->markAnnotationsChanged();
}
}
PDFListBoxPseudowidget::PDFListBoxPseudowidget(PDFFormField::FieldFlags flags) :
m_flags(flags),
m_topIndex(0),
@ -3983,12 +4089,6 @@ void PDFFormFieldListBoxEditor::commit()
bool PDFFormFieldChoice::setValue(const SetValueParameters& parameters)
{
// Do not allow to set value to push buttons
if (getFlags().testFlag(PushButton))
{
return false;
}
// If form field is readonly, and scope is user (form field is changed by user,
// not by calculated value), then we must not allow value change.
if (getFlags().testFlag(ReadOnly) && parameters.scope == SetValueParameters::Scope::User)
@ -4027,6 +4127,33 @@ bool PDFFormFieldChoice::setValue(const SetValueParameters& parameters)
return true;
}
void PDFFormFieldChoice::resetValue(const PDFFormField::ResetValueParameters& parameters)
{
Q_ASSERT(parameters.formManager);
Q_ASSERT(parameters.modifier);
PDFObject defaultValue = getDefaultValue();
PDFDocumentBuilder* builder = parameters.modifier->getBuilder();
parameters.modifier->markFormFieldChanged();
builder->setFormFieldValue(getSelfReference(), defaultValue);
m_value = defaultValue;
m_selection = PDFObject();
if (isListBox())
{
// Listbox has special values, which must be set
builder->setFormFieldChoiceTopIndex(getSelfReference(), 0);
builder->setFormFieldChoiceIndices(getSelfReference(), { });
}
// Change widget appearance states
for (const PDFFormWidget& formWidget : getWidgets())
{
builder->updateAnnotationAppearanceStreams(formWidget.getWidget());
parameters.modifier->markAnnotationsChanged();
}
}
void PDFFormFieldChoice::reloadValue(const PDFObjectStorage* storage, PDFObject parentValue)
{
BaseClass::reloadValue(storage, parentValue);

19
PdfForQtLib/sources/pdfform.h
View File

@ -250,6 +250,17 @@ public:
/// \param parameters Parameters
virtual bool setValue(const SetValueParameters& parameters);
struct ResetValueParameters
{
PDFDocumentModifier* modifier = nullptr;
PDFFormManager* formManager = nullptr;
};
/// Resets value to the field's default value. Widget annotation
/// appearances are also updated.
/// \param parameters Parameters
virtual void resetValue(const ResetValueParameters& parameters);
protected:
PDFObjectReference m_selfReference;
FieldType m_fieldType = FieldType::Invalid;
@ -297,6 +308,7 @@ public:
static QByteArray getOffAppearanceState(const PDFFormManager* formManager, const PDFFormWidget* widget);
virtual bool setValue(const SetValueParameters& parameters) override;
virtual void resetValue(const ResetValueParameters& parameters) override;
private:
friend static PDFFormFieldPointer PDFFormField::parse(const PDFObjectStorage* storage, PDFObjectReference reference, PDFFormField* parentField);
@ -321,6 +333,7 @@ public:
const QString& getRichTextValue() const { return m_richTextValue; }
virtual bool setValue(const SetValueParameters& parameters) override;
virtual void resetValue(const ResetValueParameters& parameters) override;
private:
friend static PDFFormFieldPointer PDFFormField::parse(const PDFObjectStorage* storage, PDFObjectReference reference, PDFFormField* parentField);
@ -366,6 +379,7 @@ public:
const PDFObject& getSelection() const { return m_selection; }
virtual bool setValue(const SetValueParameters& parameters) override;
virtual void resetValue(const ResetValueParameters& parameters) override;
virtual void reloadValue(const PDFObjectStorage* storage, PDFObject parentValue) override;
private:
@ -627,6 +641,11 @@ public:
/// Is committing data disabled?
bool isCommitDisabled() const { return m_isCommitDisabled; }
/// Performs reset action. Action must be valid pointer. Fields are resetted
/// according to the criteria specified in reset action.
/// \param action Reset action
void performResetAction(const PDFActionResetForm* action);
// interface IDrawWidgetInputInterface
virtual void shortcutOverrideEvent(QWidget* widget, QKeyEvent* event) override;

6
PdfForQtViewer/pdfviewermainwindow.cpp
View File

@ -610,6 +610,12 @@ void PDFViewerMainWindow::onActionTriggered(const pdf::PDFAction* action)
break;
}
case pdf::ActionType::ResetForm:
{
m_formManager->performResetAction(dynamic_cast<const pdf::PDFActionResetForm*>(action));
break;
}
default:
break;
}