300 lines
8.8 KiB
C++
300 lines
8.8 KiB
C++
/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**
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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#include "qg_commandwidget.h"
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#include <algorithm>
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#include <QAction>
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#include <QKeyEvent>
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#include <QFileDialog>
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#include <QSettings>
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#include "qg_actionhandler.h"
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#include "rs_commands.h"
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#include "rs_commandevent.h"
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#include "rs_system.h"
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#include "rs_utility.h"
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/*
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* Constructs a QG_CommandWidget as a child of 'parent', with the
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* name 'name' and widget flags set to 'f'.
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*/
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QG_CommandWidget::QG_CommandWidget(QWidget* parent, const char* name, Qt::WindowFlags fl)
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: QWidget(parent, fl)
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, actionHandler(nullptr)
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{
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setObjectName(name);
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setupUi(this);
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connect(leCommand, SIGNAL(command(QString)), this, SLOT(handleCommand(QString)));
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connect(leCommand, SIGNAL(escape()), this, SLOT(escape()));
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connect(leCommand, SIGNAL(focusOut()), this, SLOT(setNormalMode()));
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connect(leCommand, SIGNAL(focusIn()), this, SLOT(setCommandMode()));
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connect(leCommand, SIGNAL(tabPressed()), this, SLOT(tabPressed()));
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connect(leCommand, SIGNAL(clearCommandsHistory()), teHistory, SLOT(clear()));
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connect(leCommand, SIGNAL(message(QString)), this, SLOT(appendHistory(QString)));
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connect(leCommand, &QG_CommandEdit::keycode, this, &QG_CommandWidget::handleKeycode);
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auto a1 = new QAction(QObject::tr("Keycode mode"), this);
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a1->setObjectName("keycode_action");
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a1->setCheckable(true);
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connect(a1, &QAction::toggled, this, &QG_CommandWidget::setKeycodeMode);
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options_button->addAction(a1);
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QSettings settings;
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if (settings.value("Widgets/KeycodeMode", false).toBool())
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{
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leCommand->keycode_mode = true;
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a1->setChecked(true);
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}
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auto a2 = new QAction(QObject::tr("Load command file"), this);
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connect(a2, &QAction::triggered, this, &QG_CommandWidget::chooseCommandFile);
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options_button->addAction(a2);
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auto a3 = new QAction(QObject::tr("Paste multiple commands"), this);
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connect(a3, &QAction::triggered, leCommand, &QG_CommandEdit::modifiedPaste);
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options_button->addAction(a3);
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options_button->setStyleSheet("QToolButton::menu-indicator { image: none; }");
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}
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/*
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* Destroys the object and frees any allocated resources
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*/
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QG_CommandWidget::~QG_CommandWidget()
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{
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QSettings settings;
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auto action = findChild<QAction*>("keycode_action");
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settings.setValue("Widgets/KeycodeMode", action->isChecked());
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}
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/*
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* Sets the strings of the subwidgets using the current
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* language.
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*/
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void QG_CommandWidget::languageChange()
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{
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retranslateUi(this);
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}
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bool QG_CommandWidget::eventFilter(QObject */*obj*/, QEvent *event)
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{
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if (event->type() == QEvent::KeyPress) {
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QKeyEvent* e=static_cast<QKeyEvent*>(event);
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int key {e->key()};
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switch(key) {
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case Qt::Key_Return:
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case Qt::Key_Enter:
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if(!leCommand->text().size())
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return false;
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else
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break;
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case Qt::Key_Escape:
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return false;
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default:
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break;
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}
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//detect Ctl- Alt- modifier, but not Shift
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//This should avoid filtering shortcuts, such as Ctl-C
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Qt::KeyboardModifiers modifiers {e->modifiers()};
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if ( !(Qt::GroupSwitchModifier == modifiers && Qt::Key_At == key) // let '@' key pass for relative coords
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&& modifiers != Qt::KeypadModifier
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&& modifiers & (Qt::KeyboardModifierMask ^ Qt::ShiftModifier)) {
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return false;
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}
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event->accept();
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this->setFocus();
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QKeyEvent * newEvent = new QKeyEvent(*static_cast<QKeyEvent*>(event));
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QApplication::postEvent(leCommand, newEvent);
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return true;
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}
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return false;
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}
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void QG_CommandWidget::setFocus()
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{
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if (!isActiveWindow())
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activateWindow();
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auto newEvent = new QFocusEvent(QEvent::FocusIn);
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QApplication::postEvent(leCommand, newEvent);
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leCommand->setFocus();
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}
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void QG_CommandWidget::setCommand(const QString& cmd) {
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if (cmd!="") {
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lCommand->setText(cmd);
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} else {
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lCommand->setText(tr("Command:"));
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}
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leCommand->setText("");
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}
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void QG_CommandWidget::appendHistory(const QString& msg) {
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teHistory->append(msg);
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}
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void QG_CommandWidget::handleCommand(QString cmd)
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{
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cmd = cmd.simplified();
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bool isAction=false;
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if (!cmd.isEmpty()) {
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appendHistory(cmd);
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}
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if (actionHandler) {
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isAction=actionHandler->command(cmd);
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}
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if (!isAction && !(cmd.contains(',') || cmd.at(0)=='@')) {
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appendHistory(tr("Unknown command: %1").arg(cmd));
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}
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leCommand->setText("");
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}
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void QG_CommandWidget::tabPressed() {
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if (actionHandler) {
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QStringList reducedChoice;
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QString typed = leCommand->text();
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QStringList choice;
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// check current command:
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choice = actionHandler->getAvailableCommands();
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if (choice.count()==0) {
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choice = RS_COMMANDS->complete(typed);
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}
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for (QStringList::Iterator it = choice.begin(); it != choice.end(); ++it) {
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if (typed.isEmpty() || (*it).startsWith(typed)) {
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reducedChoice << (*it);
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}
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}
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// command found:
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if (reducedChoice.count()==1) {
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leCommand->setText(reducedChoice.first());
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}
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else if (reducedChoice.count()>0) {
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QString const& proposal = this->getRootCommand(reducedChoice, typed);
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appendHistory(reducedChoice.join(", "));
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leCommand -> setText(proposal);
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}
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}
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}
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void QG_CommandWidget::escape() {
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//leCommand->clearFocus();
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if (actionHandler) {
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actionHandler->command(QString(tr("escape", "escape, go back from action steps")));
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}
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}
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void QG_CommandWidget::setActionHandler(QG_ActionHandler* ah) {
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actionHandler = ah;
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}
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void QG_CommandWidget::setCommandMode() {
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QPalette palette;
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palette.setColor(lCommand->foregroundRole(), Qt::blue);
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lCommand->setPalette(palette);
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}
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void QG_CommandWidget::setNormalMode() {
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QPalette palette;
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palette.setColor(lCommand->foregroundRole(), Qt::black);
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lCommand->setPalette(palette);
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}
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QString QG_CommandWidget::getRootCommand( const QStringList & cmdList, const QString & typed ) {
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//do we have to check for empty cmdList?
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if(cmdList.empty()) return QString();
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//find the shortest string in cmdList
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auto const& shortestString = * std::min_element(cmdList.begin(), cmdList.end(),
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[](QString const& a, QString const& b) -> bool
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{
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return a.size() < b.size();
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}
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);
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int const lengthShortestString = shortestString.size();
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// Now we parse the cmdList list, character of each item by character.
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int low = typed.length();
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int high = lengthShortestString + 1;
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while(high > low + 1) {
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int mid = (high + low)/2;
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bool common = true;
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QString const& proposal = shortestString.left(mid);
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for(auto const& substring: cmdList) {
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if(!substring.startsWith(proposal)) {
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common = false;
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break;
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}
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}
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if(common) {
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low = mid;
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}
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else {
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high = mid;
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}
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}
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// As we assign just before mid value to low (if strings are common), we can use it as parameter for left.
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// If not common -> low value does not changes, even if escaping from the while. This avoids weird behaviors like continuing completion when pressing tab.
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return shortestString.left(low);
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}
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void QG_CommandWidget::chooseCommandFile()
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{
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QString path = QFileDialog::getOpenFileName(this);
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if (!path.isEmpty())
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{
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leCommand->readCommandFile(path);
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}
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}
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void QG_CommandWidget::handleKeycode(QString code)
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{
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if (actionHandler->keycode(code))
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{
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leCommand->clear();
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}
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}
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void QG_CommandWidget::setKeycodeMode(bool state)
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{
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leCommand->keycode_mode = state;
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}
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