qsrun/window.cpp
2018-01-05 15:52:11 +01:00

439 lines
10 KiB
C++

/*
* Copyright (c) 2018 Albert S. <mail at quitesimple dot org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "window.h"
#include <QDebug>
#include <QProcess>
#include <QProcessEnvironment>
#include <QDirIterator>
#include <QIcon>
#include <QKeySequence>
#include <QLabel>
#include <QDate>
#include <QHeaderView>
#include <QDesktopServices>
Window::Window(const QVector<EntryConfig> &configs, const QString &dbpath)
{
this->userEntryButtons = generateEntryButtons(configs);
createGui();
populateGrid(this->userEntryButtons);
searchWorker = new SearchWorker(dbpath);
searchWorker->moveToThread(&searchThread);
connect(this, &Window::beginFileSearch, searchWorker, &SearchWorker::searchForFile);
connect(this, &Window::beginContentSearch, searchWorker, &SearchWorker::searchForContent);
connect(searchWorker, &SearchWorker::searchResultsReady, this, &Window::handleSearchResults);
searchThread.start();
initTreeWidgets();
this->lineEdit->installEventFilter(this);
}
Window::~Window()
{
searchThread.quit();
searchThread.wait();
}
void Window::initTreeWidgets()
{
QStringList headers;
headers << "Filename";
headers << "Path";
headers << "Modification time";
treeFileSearchResults.setHeaderLabels(headers);
treeFileSearchResults.header()->setSectionResizeMode(QHeaderView::ResizeToContents);
connect(&treeFileSearchResults, &QTreeWidget::itemActivated, this, &Window::treeSearchItemActivated);
}
QVector<EntryPushButton*> Window::generateEntryButtons(const QVector<EntryConfig> &configs)
{
QVector<EntryPushButton*> result;
for(const EntryConfig &config : configs)
{
EntryPushButton *button = createEntryButton(config);
result.append(button);
}
return result;
}
void Window::createGui()
{
QVBoxLayout *vbox = new QVBoxLayout(this);
grid = new QGridLayout();
lineEdit = new QLineEdit();
vbox->setAlignment(Qt::AlignTop);
vbox->addWidget(lineEdit);
vbox->addLayout(grid);
connect(lineEdit, &QLineEdit::textChanged, this, [this](QString newtext) { this->lineEditTextChanged(newtext); });
connect(lineEdit, &QLineEdit::returnPressed, this, &Window::lineEditReturnPressed);
}
void Window::populateGrid(const QVector<EntryPushButton *> &list)
{
clearGrid();
for(EntryPushButton *button : list)
{
button->setVisible(true);
grid->addWidget(button, button->getRow(), button->getCol());
buttonsInGrid.append(button);
}
}
void Window::buttonClick(const EntryPushButton &config)
{
QProcess::startDetached(config.getCommand(), config.getArguments());
qApp->quit();
}
QStringList Window::generatePATHSuggestions(const QString &text)
{
QStringList results;
QString pathVar = QProcessEnvironment::systemEnvironment().value("PATH", "/usr/bin/:/bin/:");
QStringList paths = pathVar.split(":");
for(const QString &path : paths)
{
QDirIterator it(path);
while(it.hasNext())
{
QFileInfo info(it.next());
if(info.isFile() && info.isExecutable())
{
QString entry = info.baseName();
if(entry.startsWith(text))
{
results.append(entry);
}
}
}
}
return results;
}
void Window::addPATHSuggestion(const QString &text)
{
QStringList suggestions = generatePATHSuggestions(text);
if(suggestions.length() == 1)
{
EntryConfig e;
e.name = suggestions[0];
e.col=0;
e.row=0;
e.command = suggestions[0];
e.icon = QIcon::fromTheme(suggestions[0]);
EntryPushButton *button = createEntryButton(e);
clearGrid();
grid->addWidget(button, 0, 0);
buttonsInGrid.append(button);
}
}
void Window::clearGrid()
{
int count = grid->count();
for(int i = 0; i < count; i++)
{
auto item = grid->itemAt(0)->widget();
grid->removeWidget(item);
item->setVisible(false);
}
buttonsInGrid.clear();
}
void Window::addCalcResult(const QString &expression)
{
clearGrid();
QString calculationresult = calcEngine.evaluate(expression);
QLabel *lbl = new QLabel();
lbl->setText(expression + ": " + calculationresult);
lbl->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
lbl->setAlignment(Qt::AlignCenter);
lbl->setWordWrap(true);
QFont font;
font.setPointSize(48);
font.setBold(true);
lbl->setFont(font);
grid->addWidget(lbl, 0, 0);
}
//main problem here there is no easy event compression (clearing emit queue and only processing the last one)
void Window::lineEditTextChanged(QString text)
{
if(text.length() >= 2)
{
QString input = text.mid(1);
if(text[0] == '=')
{
addCalcResult(input);
return;
}
if(text[0] == '/')
{
if(searchWorker->isOperationPending())
{
this->queuedFileSearch = input;
searchWorker->requestCancellation();
}
else
{
this->queuedFileSearch = "";
emit beginFileSearch(input);
}
return;
}
if(text[0] == '|')
{
if(searchWorker->isOperationPending())
{
this->queuedContentSearch = input;
searchWorker->requestCancellation();
}
else
{
this->queuedContentSearch = "";
emit beginContentSearch(input);
}
return;
}
}
filterGridFor(text);
if(this->grid->count() == 0)
{
addPATHSuggestion(text);
if(this->grid->count() == 0)
{
QStringList arguments = text.split(" ");
EntryConfig e;
e.name = "Execute: " + text;
if(arguments.length() > 1)
{
e.arguments = arguments.mid(1);
}
e.command = arguments[0];
e.icon = QIcon::fromTheme("utilities-terminal");
EntryPushButton *button = createEntryButton(e);
clearGrid();
grid->addWidget(button, 0, 0);
buttonsInGrid.append(button);
}
}
}
void Window::keyReleaseEvent(QKeyEvent *event)
{
if(event->key() == Qt::Key_Control)
{
for(EntryPushButton *button : buttonsInGrid)
{
button->showName();
}
}
QWidget::keyReleaseEvent(event);
}
void Window::keyPressEvent(QKeyEvent *event)
{
bool quit = ((event->modifiers() & Qt::ControlModifier && event->key() == Qt::Key_Q) || event->key() == Qt::Key_Escape);
if(quit)
{
qApp->quit();
}
if(event->modifiers() & Qt::ControlModifier && buttonsInGrid.count() > 0)
{
if(event->key() == Qt::Key_L)
{
this->lineEdit->setFocus();
this->lineEdit->selectAll();
}
for(EntryPushButton *button : buttonsInGrid)
{
button->showShortcut();
}
QKeySequence seq(event->key());
QString key = seq.toString().toLower();
auto it = std::find_if(userEntryButtons.begin(), userEntryButtons.end(), [&key](const EntryPushButton *y) { return y->getShortcutKey() == key; });
if(it != userEntryButtons.end())
{
buttonClick(**it);
}
}
QWidget::keyPressEvent(event);
}
void Window::filterGridFor(QString filter)
{
if(filter.length() > 0)
{
clearGrid();
bool userEntryMatch = false;
for(EntryPushButton *button : this->userEntryButtons)
{
if(button->getName().contains(filter, Qt::CaseInsensitive))
{
button->setVisible(true);
grid->addWidget(button, button->getRow(), button->getCol());
this->buttonsInGrid.append(button);
userEntryMatch = true;
}
}
if(!userEntryMatch)
{
int currow = 0;
int curcol = 0;
int i = 1;
for(EntryPushButton *button : this->systemEntryButtons)
{
if(button->getName().contains(filter, Qt::CaseInsensitive))
{
button->setVisible(true);
button->setShortcut(QString::number(i++));
grid->addWidget(button, currow, curcol++);
this->buttonsInGrid.append(button);
if(curcol == 3)
{
curcol = 0;
++currow;
}
}
}
}
}
else
{
populateGrid(this->userEntryButtons);
}
}
EntryPushButton * Window::createEntryButton(const EntryConfig &entry)
{
EntryPushButton *button = new EntryPushButton(entry);
connect(button, &EntryPushButton::clicked, this, &Window::buttonClick);
return button;
}
void Window::lineEditReturnPressed()
{
if(buttonsInGrid.length() > 0 && this->lineEdit->text().length() > 0 )
{
buttonClick(*buttonsInGrid[0]);
return;
}
if(this->isSearchMode())
{
treeSearchItemActivated(treeFileSearchResults.topLevelItem(0), 0);
}
}
void Window::setSystemConfig(const QVector<EntryConfig> &config)
{
this->systemEntryButtons = generateEntryButtons(config);
}
void Window::handleSearchResults(const QVector<QString> &results)
{
clearGrid();
treeFileSearchResults.clear();
for(const QString &path : results)
{
QFileInfo pathInfo(path);
QString fileName =pathInfo.fileName();
QString absPath = path;
QString datestr = pathInfo.lastModified().toString(Qt::ISODate);
QTreeWidgetItem *item = new QTreeWidgetItem(&treeFileSearchResults);
item->setText(0, fileName);
item->setText(1, absPath);
item->setText(2, datestr);
}
treeFileSearchResults.resizeColumnToContents(0);
treeFileSearchResults.resizeColumnToContents(2);
treeFileSearchResults.setVisible(true);
this->grid->addWidget(&treeFileSearchResults, 0, 0);
}
void Window::handleCancelledSearch()
{
if(this->queuedFileSearch != "")
{
QString searchFor = this->queuedFileSearch;
this->queuedFileSearch = "";
emit beginFileSearch(searchFor);
}
if(this->queuedContentSearch != "")
{
QString searchFor = this->queuedContentSearch;
this->queuedContentSearch = "";
emit beginContentSearch(searchFor);
}
}
void Window::treeSearchItemActivated(QTreeWidgetItem *item, int i)
{
qDebug() << item->text(1);
QDesktopServices::openUrl(QUrl::fromLocalFile(item->text(1)));
}
bool Window::eventFilter(QObject *obj, QEvent *event)
{
if(obj == this->lineEdit)
{
if (event->type() == QEvent::KeyPress)
{
QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
if(keyEvent->key() == Qt::Key_Tab)
{
QStringList suggestions = generatePATHSuggestions(this->lineEdit->text());
if(suggestions.length() == 1)
{
this->lineEdit->setText(suggestions[0] + " ");
this->lineEdit->setCursorPosition(this->lineEdit->text().length()+1);
}
return true;
}
}
}
return QObject::eventFilter(obj, event);
}
bool Window::isSearchMode()
{
QChar c = this->lineEdit->text()[0];
return c == '/' || c == '|';
}