mirror of
https://git.lyx.org/repos/lyx.git
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363 lines
8.3 KiB
C++
363 lines
8.3 KiB
C++
/**
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* \file GuiCommandBuffer.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars
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* \author Asger and Jürgen
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* \author John Levon
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "GuiCommandBuffer.h"
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#include "GuiApplication.h"
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#include "GuiCommandEdit.h"
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#include "GuiView.h"
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#include "qt_helpers.h"
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#include "BufferView.h"
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#include "Cursor.h"
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#include "LyX.h"
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#include "LyXAction.h"
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#include "FuncRequest.h"
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#include "Session.h"
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#include "support/lyxalgo.h"
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#include "support/lstrings.h"
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#include <QHBoxLayout>
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#include <QKeyEvent>
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#include <QListWidget>
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#include <QMouseEvent>
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#include <QPixmap>
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#include <QPushButton>
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#include <QToolTip>
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#include <QVBoxLayout>
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using namespace std;
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using namespace lyx::support;
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namespace lyx {
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namespace frontend {
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namespace {
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class QTempListBox : public QListWidget {
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public:
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QTempListBox() {
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//setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setWindowModality(Qt::WindowModal);
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setWindowFlags(Qt::Popup);
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setAttribute(Qt::WA_DeleteOnClose);
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}
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protected:
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bool event(QEvent * ev) {
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if (ev->type() == QEvent::MouseButtonPress) {
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QMouseEvent * me = static_cast<QMouseEvent *>(ev);
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if (me->x() < 0 || me->y() < 0
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|| me->x() > width() || me->y() > height())
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hide();
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return true;
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}
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return QListWidget::event(ev);
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}
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void keyPressEvent(QKeyEvent * ev) {
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if (ev->key() == Qt::Key_Escape) {
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hide();
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return;
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} else if (ev->key() == Qt::Key_Return || ev->key() == Qt::Key_Space) {
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// emit signal
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itemClicked(currentItem());
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} else
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QListWidget::keyPressEvent(ev);
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}
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};
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} // end of anon
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GuiCommandBuffer::GuiCommandBuffer(GuiView * view)
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: view_(view)
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{
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transform(lyxaction.func_begin(), lyxaction.func_end(),
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back_inserter(commands_), firster());
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QPixmap qpup = getPixmap("images/", "up", "svgz,png");
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QPixmap qpdown = getPixmap("images/", "down", "svgz,png");
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QVBoxLayout * top = new QVBoxLayout(this);
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QHBoxLayout * layout = new QHBoxLayout(0);
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edit_ = new GuiCommandEdit(this);
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edit_->setMinimumSize(edit_->sizeHint());
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edit_->setFocusPolicy(Qt::ClickFocus);
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int height = max(24, 2 * (edit_->sizeHint().height() / 2));
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QSize button_size = QSize(height, height);
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QSize icon_size = button_size - QSize(4, 4);
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upPB = new QPushButton(qpup, "", this);
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upPB->setToolTip(qt_("List of previous commands"));
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upPB->setMaximumSize(button_size);
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upPB->setIconSize(icon_size);
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downPB = new QPushButton(qpdown, "", this);
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downPB->setToolTip(qt_("Next command"));
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downPB->setMaximumSize(button_size);
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downPB->setIconSize(icon_size);
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downPB->setEnabled(false);
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connect(downPB, SIGNAL(clicked()), this, SLOT(down()));
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connect(upPB, SIGNAL(pressed()), this, SLOT(listHistoryUp()));
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connect(edit_, SIGNAL(returnPressed()), this, SLOT(dispatch()));
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connect(edit_, SIGNAL(tabPressed()), this, SLOT(complete()));
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connect(edit_, SIGNAL(upPressed()), this, SLOT(up()));
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connect(edit_, SIGNAL(downPressed()), this, SLOT(down()));
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connect(edit_, SIGNAL(escapePressed()), this, SLOT(hideParent()));
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layout->addWidget(upPB, 0);
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layout->addWidget(downPB, 0);
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layout->addWidget(edit_, 10);
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layout->setMargin(0);
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top->addLayout(layout);
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top->setMargin(0);
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setFocusProxy(edit_);
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LastCommandsSection::LastCommands last_commands
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= theSession().lastCommands().getcommands();
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LastCommandsSection::LastCommands::const_iterator it
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= last_commands.begin();
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LastCommandsSection::LastCommands::const_iterator end
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= last_commands.end();
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upPB->setEnabled(it != end);
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for(; it != end; ++it)
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history_.push_back(*it);
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history_pos_ = history_.end();
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}
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void GuiCommandBuffer::dispatch()
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{
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std::string const cmd = fromqstr(edit_->text());
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if (!cmd.empty())
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theSession().lastCommands().add(cmd);
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DispatchResult const & dr = dispatch(cmd);
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if (!dr.error()) {
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view_->setFocus();
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edit_->setText(QString());
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edit_->clearFocus();
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// If the toolbar was "auto", it is not needed anymore
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view_->resetCommandExecute();
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}
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}
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void GuiCommandBuffer::listHistoryUp()
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{
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if (history_.size()==1) {
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edit_->setText(toqstr(history_.back()));
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upPB->setEnabled(false);
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return;
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}
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QPoint const & pos = upPB->mapToGlobal(QPoint(0, 0));
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showList(history_, pos, true);
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}
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void GuiCommandBuffer::complete()
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{
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string const input = fromqstr(edit_->text());
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string new_input;
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vector<string> const & comp = completions(input, new_input);
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if (comp.empty()) {
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if (new_input != input)
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edit_->setText(toqstr(new_input));
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return;
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}
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edit_->setText(toqstr(new_input));
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QPoint const & pos = edit_->mapToGlobal(QPoint(0, 0));
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showList(comp, pos);
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}
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void GuiCommandBuffer::showList(vector<string> const & list,
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QPoint const & pos, bool reversed) const
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{
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QTempListBox * listBox = new QTempListBox;
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// For some reason the scrollview's contents are larger
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// than the number of actual items...
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vector<string>::const_iterator cit = list.begin();
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vector<string>::const_iterator end = list.end();
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for (; cit != end; ++cit) {
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if (reversed)
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listBox->insertItem(0, toqstr(*cit));
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else
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listBox->addItem(toqstr(*cit));
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}
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listBox->resize(listBox->sizeHint());
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int const y = max(0, pos.y() - listBox->height());
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listBox->move(pos.x(), y);
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connect(listBox, SIGNAL(itemClicked(QListWidgetItem *)),
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this, SLOT(itemSelected(QListWidgetItem *)));
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connect(listBox, SIGNAL(itemActivated(QListWidgetItem *)),
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this, SLOT(itemSelected(QListWidgetItem *)));
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listBox->show();
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listBox->setFocus();
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}
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void GuiCommandBuffer::itemSelected(QListWidgetItem * item)
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{
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QWidget const * widget = static_cast<QWidget const *>(sender());
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const_cast<QWidget *>(widget)->hide();
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edit_->setText(item->text()+ ' ');
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edit_->activateWindow();
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edit_->setFocus();
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}
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void GuiCommandBuffer::up()
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{
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string const h = historyUp();
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if (!h.empty())
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edit_->setText(toqstr(h));
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upPB->setEnabled(history_pos_ != history_.begin());
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downPB->setEnabled(history_pos_ != history_.end());
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}
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void GuiCommandBuffer::down()
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{
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string const h = historyDown();
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if (!h.empty())
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edit_->setText(toqstr(h));
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downPB->setEnabled(!history_.empty()
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&& history_pos_ != history_.end() - 1);
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upPB->setEnabled(history_pos_ != history_.begin());
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}
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void GuiCommandBuffer::hideParent()
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{
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view_->setFocus();
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view_->resetCommandExecute();
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edit_->setText(QString());
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edit_->clearFocus();
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}
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namespace {
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class prefix_p {
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public:
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string p;
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prefix_p(string const & s) : p(s) {}
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bool operator()(string const & s) const { return prefixIs(s, p); }
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};
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} // end of anon namespace
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string const GuiCommandBuffer::historyUp()
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{
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if (history_pos_ == history_.begin())
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return string();
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return *(--history_pos_);
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}
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string const GuiCommandBuffer::historyDown()
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{
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if (history_pos_ == history_.end())
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return string();
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if (history_pos_ + 1 == history_.end())
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return string();
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return *(++history_pos_);
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}
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docstring const GuiCommandBuffer::getCurrentState() const
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{
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return view_->currentBufferView()->cursor().currentState();
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}
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vector<string> const
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GuiCommandBuffer::completions(string const & prefix, string & new_prefix)
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{
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vector<string> comp;
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lyx::copy_if(commands_.begin(), commands_.end(),
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back_inserter(comp), prefix_p(prefix));
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if (comp.empty()) {
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new_prefix = prefix;
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return comp;
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}
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if (comp.size() == 1) {
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new_prefix = comp[0];
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return vector<string>();
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}
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// find maximal available prefix
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string const tmp = comp[0];
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string test = prefix;
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if (tmp.length() > test.length())
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test += tmp[test.length()];
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while (test.length() < tmp.length()) {
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vector<string> vtmp;
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lyx::copy_if(comp.begin(), comp.end(),
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back_inserter(vtmp), prefix_p(test));
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if (vtmp.size() != comp.size()) {
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test.erase(test.length() - 1);
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break;
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}
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test += tmp[test.length()];
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}
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new_prefix = test;
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return comp;
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}
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DispatchResult const & GuiCommandBuffer::dispatch(string const & str)
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{
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if (str.empty()) {
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static DispatchResult empty_dr;
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return empty_dr;
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}
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history_.push_back(trim(str));
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history_pos_ = history_.end();
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upPB->setEnabled(history_pos_ != history_.begin());
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downPB->setEnabled(history_pos_ != history_.end());
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FuncRequest func = lyxaction.lookupFunc(str);
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func.setOrigin(FuncRequest::COMMANDBUFFER);
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return lyx::dispatch(func);
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}
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} // namespace frontend
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} // namespace lyx
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#include "moc_GuiCommandBuffer.cpp"
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