lyx_mirror/src/frontends/qt4/TocWidget.cpp

280 lines
6.0 KiB
C++
Raw Normal View History

/**
* \file TocWidget.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author John Levon
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "TocWidget.h"
#include "GuiView.h"
#include "qt_helpers.h"
#include "TocModel.h"
#include "FuncRequest.h"
#include "LyXFunc.h"
#include "support/debug.h"
#include <QHeaderView>
#include <QTimer>
#include <vector>
using namespace std;
namespace lyx {
namespace frontend {
TocWidget::TocWidget(GuiView & gui_view, QWidget * parent)
: QWidget(parent), depth_(0), gui_view_(gui_view)
{
setupUi(this);
moveOutTB->setIcon(QIcon(":/images/promote.png"));
moveInTB->setIcon(QIcon(":/images/demote.png"));
moveUpTB->setIcon(QIcon(":/images/up.png"));
moveDownTB->setIcon(QIcon(":/images/down.png"));
updateTB->setIcon(QIcon(":/images/reload.png"));
// avoid flickering
tocTV->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
tocTV->showColumn(0);
// hide the pointless QHeader for now
// in the future, new columns may appear
// like labels, bookmarks, etc...
// tocTV->header()->hide();
tocTV->header()->setVisible(false);
// Only one item selected at a time.
tocTV->setSelectionMode(QAbstractItemView::SingleSelection);
}
void TocWidget::on_tocTV_activated(QModelIndex const & index)
{
goTo(index);
}
void TocWidget::on_tocTV_clicked(QModelIndex const & index)
{
goTo(index);
gui_view_.setFocus();
}
void TocWidget::goTo(QModelIndex const & index)
{
LYXERR(Debug::GUI, "goto " << index.row()
<< ", " << index.column());
gui_view_.tocModels().goTo(typeCO->currentIndex(), index);
}
void TocWidget::on_updateTB_clicked()
{
// The backend update can take some time so we disable
// the controls while waiting.
enableControls(false);
gui_view_.tocModels().updateBackend();
}
/* FIXME (Ugras 17/11/06):
I have implemented a getIndexDepth function to get the model indices. In my
opinion, somebody should derive a new qvariant class for tocModelItem
which saves the string data and depth information. that will save the
depth calculation.
*/
int TocWidget::getIndexDepth(QModelIndex const & index, int depth)
{
++depth;
return (index.parent() == QModelIndex())
? depth : getIndexDepth(index.parent(),depth);
}
void TocWidget::on_depthSL_valueChanged(int depth)
{
if (depth == depth_)
return;
setTreeDepth(depth);
gui_view_.setFocus();
}
void TocWidget::setTreeDepth(int depth)
{
depth_ = depth;
// expanding and then collapsing is probably better,
// but my qt 4.1.2 doesn't have expandAll()..
//tocTV->expandAll();
QModelIndexList indices = tocTV->model()->match(
tocTV->model()->index(0,0),
Qt::DisplayRole, "*", -1,
Qt::MatchFlags(Qt::MatchWildcard|Qt::MatchRecursive));
int size = indices.size();
for (int i = 0; i < size; i++) {
QModelIndex index = indices[i];
tocTV->setExpanded(index, getIndexDepth(index) < depth_);
}
}
void TocWidget::on_typeCO_currentIndexChanged(int value)
{
setTocModel(value);
}
void TocWidget::outline(int func_code)
{
enableControls(false);
QModelIndexList const & list = tocTV->selectionModel()->selectedIndexes();
if (list.isEmpty())
return;
enableControls(false);
goTo(list[0]);
dispatch(FuncRequest(static_cast<FuncCode>(func_code)));
enableControls(true);
gui_view_.setFocus();
}
void TocWidget::on_moveUpTB_clicked()
{
outline(LFUN_OUTLINE_UP);
}
void TocWidget::on_moveDownTB_clicked()
{
outline(LFUN_OUTLINE_DOWN);
}
void TocWidget::on_moveInTB_clicked()
{
outline(LFUN_OUTLINE_IN);
}
void TocWidget::on_moveOutTB_clicked()
{
outline(LFUN_OUTLINE_OUT);
}
void TocWidget::select(QModelIndex const & index)
{
if (!index.isValid()) {
LYXERR(Debug::GUI, "TocWidget::select(): QModelIndex is invalid!");
return;
}
tocTV->scrollTo(index);
tocTV->clearSelection();
tocTV->setCurrentIndex(index);
}
void TocWidget::enableControls(bool enable)
{
updateTB->setEnabled(enable);
if (!gui_view_.tocModels().canOutline(typeCO->currentIndex()))
enable = false;
moveUpTB->setEnabled(enable);
moveDownTB->setEnabled(enable);
moveInTB->setEnabled(enable);
moveOutTB->setEnabled(enable);
depthSL->setEnabled(enable);
}
void TocWidget::updateView()
{
LYXERR(Debug::GUI, "In TocWidget::updateView()");
setTreeDepth(depth_);
select(gui_view_.tocModels().currentIndex(typeCO->currentIndex()));
}
void TocWidget::init(QString const & str)
{
QStringList const & type_names = gui_view_.tocModels().typeNames();
if (type_names.isEmpty()) {
enableControls(false);
typeCO->clear();
tocTV->setModel(new QStandardItemModel);
tocTV->setEditTriggers(QAbstractItemView::NoEditTriggers);
return;
}
int selected_type = gui_view_.tocModels().decodeType(str);
QString const current_text = typeCO->currentText();
typeCO->blockSignals(true);
typeCO->clear();
for (int i = 0; i != type_names.size(); ++i)
typeCO->addItem(type_names[i]);
if (!str.isEmpty())
typeCO->setCurrentIndex(selected_type);
else {
int const new_index = typeCO->findText(current_text);
if (new_index != -1)
typeCO->setCurrentIndex(new_index);
else
typeCO->setCurrentIndex(selected_type);
}
typeCO->blockSignals(false);
setTocModel(typeCO->currentIndex());
}
void TocWidget::setTocModel(size_t type)
{
bool controls_enabled = false;
QStandardItemModel * toc_model = gui_view_.tocModels().model(type);
if (toc_model) {
controls_enabled = toc_model->rowCount() > 0;
tocTV->setModel(toc_model);
tocTV->setEditTriggers(QAbstractItemView::NoEditTriggers);
LYXERR(Debug::GUI, "tocModel()->rowCount "
<< toc_model->rowCount()
<< "\nform_->tocModel()->columnCount "
<< toc_model->columnCount());
}
enableControls(controls_enabled);
if (controls_enabled) {
depthSL->setMaximum(gui_view_.tocModels().depth(type));
depthSL->setValue(depth_);
}
// setTocModel produce QTreeView reset and setting depth again
// is needed. That must be done after all Qt updates are processed.
QTimer::singleShot(0, this, SLOT(updateView()));
}
} // namespace frontend
} // namespace lyx
#include "TocWidget_moc.cpp"