ui: added smart search box
This change switches the search box in the search view from QLineEdit to the derived QtSmartSearchBox implementation, which is capeable of displaying tokens of the query as selectable button elements in different colors. It allows for all the usual mouse and keyboard interactions that the QLineEdit offers. fortune cookie message = Good news from someone dear is coming soon.
This commit is contained in:
Eberhard Graether
@@ -0,0 +1,640 @@
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#include "qt/element/QtSmartSearchBox.h"
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#include <stdlib.h>
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#include <QAbstractItemView>
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#include <QApplication>
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#include <QClipboard>
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#include <QCompleter>
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#include <QKeyEvent>
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#include "data/query/QueryTree.h"
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#include "utility/messaging/type/MessageSearch.h"
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#include "utility/messaging/type/MessageSearchAutocomplete.h"
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#include "utility/text/TextAccess.h"
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#include "utility/utilityString.h"
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QtQueryElement::QtQueryElement(const QString& text, QWidget* parent)
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: QPushButton(text, parent)
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{
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show();
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setCheckable(true);
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connect(this, SIGNAL(clicked(bool)), this, SLOT(onChecked(bool)));
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}
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void QtQueryElement::onChecked(bool)
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{
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emit wasChecked(this);
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}
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void QtSmartSearchBox::search()
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{
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editTextToElement();
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MessageSearch(utility::join(m_tokens, "") + text().toStdString()).dispatch();
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}
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QtSmartSearchBox::QtSmartSearchBox(QWidget* parent)
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: QLineEdit(parent)
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, m_cursorIndex(0)
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, m_shiftKeyDown(false)
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, m_mousePressed(false)
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{
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connect(this, SIGNAL(returnPressed()), this, SLOT(search()), Qt::QueuedConnection);
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connect(this, SIGNAL(textEdited(const QString&)), this, SLOT(onTextEdited(const QString&)));
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connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(onTextChanged(const QString&)));
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updatePlaceholder();
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}
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QtSmartSearchBox::~QtSmartSearchBox()
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{
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}
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void QtSmartSearchBox::setAutocompletionList(const std::vector<SearchIndex::SearchMatch>& autocompletionList)
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{
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m_matches = autocompletionList;
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QStringList wordList;
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for (const SearchIndex::SearchMatch& match: autocompletionList)
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{
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wordList << match.fullName.c_str();
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}
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QCompleter *completer = new QCompleter(wordList, this);
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completer->popup()->setObjectName("search_box_popup");
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completer->setCaseSensitivity(Qt::CaseInsensitive);
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setCompleter(completer);
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completer->complete();
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connect(completer, SIGNAL(highlighted(const QModelIndex&)), this, SLOT(onSearchCompletionHighlighted(const QModelIndex&)), Qt::DirectConnection);
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connect(completer, SIGNAL(activated(const QModelIndex&)), this, SLOT(onSearchCompletionActivated(const QModelIndex&)), Qt::DirectConnection);
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}
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void QtSmartSearchBox::setQuery(const std::string& text)
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{
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clearLineEdit();
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m_tokens = QueryTree::tokenizeQuery(text);
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m_cursorIndex = m_tokens.size();
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updateElements();
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}
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void QtSmartSearchBox::setFocus()
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{
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QLineEdit::setFocus(Qt::ShortcutFocusReason);
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selectAllElementsWith(true);
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}
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void QtSmartSearchBox::resizeEvent(QResizeEvent* event)
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{
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QLineEdit::resizeEvent(event);
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layoutElements();
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}
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void QtSmartSearchBox::keyPressEvent(QKeyEvent* event)
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{
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m_shiftKeyDown = event->modifiers() & Qt::ShiftModifier;
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if (event->key() == Qt::Key_Backspace)
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{
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if (hasSelectedElements())
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{
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deleteSelectedElements();
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return;
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}
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else if (!hasSelectedText() && cursorPosition() == 0 && m_cursorIndex > 0)
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{
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m_elements[m_cursorIndex - 1]->setChecked(true);
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deleteSelectedElements();
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return;
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}
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}
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else if (event->matches(QKeySequence::MoveToPreviousChar))
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{
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if (hasSelectedElements())
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{
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for (size_t i = 0; i < m_elements.size(); i++)
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{
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if (m_elements[i]->isChecked())
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{
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m_cursorIndex = i;
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break;
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}
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}
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selectAllElementsWith(false);
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layoutElements();
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}
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else if (cursorPosition() == 0 && m_cursorIndex > 0)
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{
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editTextToElement();
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moveCursor(-1);
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return;
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}
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}
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else if (event->matches(QKeySequence::MoveToNextChar))
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{
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if (hasSelectedElements())
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{
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for (size_t i = m_elements.size(); i > 0; i--)
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{
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if (m_elements[i - 1]->isChecked())
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{
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m_cursorIndex = i;
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break;
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}
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}
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selectAllElementsWith(false);
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layoutElements();
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}
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else if (cursorPosition() == text().size() && (text().size() || m_cursorIndex < static_cast<int>(m_elements.size())))
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{
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if (!editTextToElement())
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{
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moveCursor(1);
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}
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return;
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}
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}
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else if (event->matches(QKeySequence::SelectPreviousChar))
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{
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if (cursorPosition() == 0 && m_cursorIndex > 0)
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{
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editTextToElement();
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m_elements[m_cursorIndex - 1]->setChecked(!m_elements[m_cursorIndex - 1]->isChecked());
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moveCursor(-1);
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}
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}
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else if (event->matches(QKeySequence::SelectNextChar))
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{
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if (cursorPosition() == text().size() && m_cursorIndex < static_cast<int>(m_elements.size()))
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{
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editTextToElement();
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m_elements[m_cursorIndex]->setChecked(!m_elements[m_cursorIndex]->isChecked());
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moveCursor(1);
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}
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}
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else if (event->matches(QKeySequence::MoveToStartOfLine))
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{
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editTextToElement();
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moveCursorTo(0);
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return;
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}
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else if (event->matches(QKeySequence::MoveToEndOfLine))
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{
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if (m_cursorIndex < static_cast<int>(m_elements.size()))
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{
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editTextToElement();
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moveCursorTo(m_elements.size());
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return;
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}
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}
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else if (event->matches(QKeySequence::SelectAll))
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{
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if (m_elements.size())
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{
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editTextToElement();
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selectAllElementsWith(true);
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layoutElements();
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return;
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}
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}
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else if (event->matches(QKeySequence::Cut))
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{
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if (hasSelectedElements())
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{
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std::string str = getSelectedString();
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deleteSelectedElements();
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QApplication::clipboard()->setText(QString::fromStdString(str));
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return;
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}
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}
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else if (event->matches(QKeySequence::Copy))
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{
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if (hasSelectedElements())
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{
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std::string str = getSelectedString();
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QApplication::clipboard()->setText(QString::fromStdString(str));
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return;
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}
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}
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else if (event->matches(QKeySequence::Paste))
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{
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setText(text() + QApplication::clipboard()->text());
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onTextEdited(text());
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return;
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}
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QLineEdit::keyPressEvent(event);
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}
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void QtSmartSearchBox::keyReleaseEvent(QKeyEvent* event)
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{
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m_shiftKeyDown = event->modifiers() & Qt::ShiftModifier;
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}
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void QtSmartSearchBox::mouseMoveEvent(QMouseEvent* event)
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{
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QLineEdit::mouseMoveEvent(event);
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if (!m_mousePressed)
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{
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return;
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}
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int lo = event->x() < m_mouseX ? event->x() : m_mouseX;
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int hi = event->x() > m_mouseX ? event->x() : m_mouseX;
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for (size_t i = 0; i < m_elements.size(); i++)
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{
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int widgetX = m_elements[i]->x() + m_elements[i]->width() / 2;
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m_elements[i]->setChecked(lo < widgetX && widgetX < hi);
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}
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layoutElements();
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}
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void QtSmartSearchBox::mousePressEvent(QMouseEvent* event)
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{
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QLineEdit::mousePressEvent(event);
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m_mousePressed = true;
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m_mouseX = event->x();
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}
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void QtSmartSearchBox::mouseReleaseEvent(QMouseEvent* event)
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{
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QLineEdit::mouseReleaseEvent(event);
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m_mousePressed = false;
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if (abs(event->x() - m_mouseX) > 5)
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{
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return;
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}
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int minDist = event->x();
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int pos = 0;
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for (size_t i = 0; i < m_elements.size(); i++)
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{
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int dist = m_elements[i]->x() + m_elements[i]->width() - event->x();
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if (abs(dist) < abs(minDist))
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{
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pos = i + 1;
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minDist = dist;
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}
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}
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bool hasSelected = hasSelectedElements();
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selectAllElementsWith(false);
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if (pos - m_cursorIndex != 0)
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{
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editTextToElement();
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moveCursor(pos - m_cursorIndex);
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}
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else if (hasSelected)
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{
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layoutElements();
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}
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}
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void QtSmartSearchBox::onTextEdited(const QString& text)
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{
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deleteSelectedElements();
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std::string token;
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std::deque<std::string> tokens = QueryTree::tokenizeQuery(text.toStdString());
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while (tokens.size())
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{
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token = tokens.front();
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tokens.pop_front();
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if (tokens.size() || QueryTree::getTokenTypeName(token) != "none")
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{
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textToToken(token);
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token.clear();
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}
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}
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if (text.toStdString() != token)
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{
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setText(QString::fromStdString(token));
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updateElements();
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}
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else
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{
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layoutElements();
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}
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if (token.size())
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{
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MessageSearchAutocomplete(token).dispatch();
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}
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}
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void QtSmartSearchBox::onTextChanged(const QString& text)
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{
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if (m_oldText.size())
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{
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setText(m_oldText);
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}
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m_oldText.clear();
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updatePlaceholder();
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}
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void QtSmartSearchBox::onSearchCompletionHighlighted(const QModelIndex& index)
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{
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m_oldText = text();
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}
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void QtSmartSearchBox::onSearchCompletionActivated(const QModelIndex& index)
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{
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if (index.row() >= 0 && index.row() < int(m_matches.size()))
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{
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m_oldText.clear();
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clearLineEdit();
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std::string match = m_matches[index.row()].encodeForQuery();
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textToToken(match);
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updateElements();
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}
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completer()->blockSignals(true);
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}
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void QtSmartSearchBox::onElementSelected(QtQueryElement* element)
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{
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if (!hasSelectedElements() && !m_shiftKeyDown)
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{
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editElement(element);
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return;
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}
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int idx = 0;
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bool checked = element->isChecked();
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for (size_t i = 0; i < m_elements.size(); i++)
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{
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if (m_elements[i].get() == element)
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{
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idx = i;
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break;
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}
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}
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if (text().size())
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{
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if (m_cursorIndex <= idx)
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{
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idx++;
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}
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editTextToElement();
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element = m_elements[idx].get();
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element->setChecked(checked);
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}
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if (m_shiftKeyDown)
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{
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selectElementsTo(idx, checked);
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}
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else
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{
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selectAllElementsWith(false);
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element->setChecked(true);
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m_cursorIndex = idx + 1;
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}
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layoutElements();
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}
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void QtSmartSearchBox::moveCursor(int offset)
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{
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moveCursorTo(m_cursorIndex + offset);
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}
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void QtSmartSearchBox::moveCursorTo(int target)
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{
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if (target >= 0 && target <= static_cast<int>(m_elements.size()))
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{
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m_cursorIndex = target;
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layoutElements();
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}
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}
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void QtSmartSearchBox::textToToken(std::string text)
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{
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if (!text.size())
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{
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return;
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}
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if (m_matches.size() && utility::equalsCaseInsensitive(text, m_matches.front().fullName))
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{
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text = m_matches.front().encodeForQuery();
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}
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m_tokens.insert(m_tokens.begin() + m_cursorIndex, text);
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m_cursorIndex++;
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}
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bool QtSmartSearchBox::editTextToElement()
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{
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if (text().size())
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{
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textToToken(text().toStdString());
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clearLineEdit();
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updateElements();
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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 QtSmartSearchBox::editElement(QtQueryElement* element)
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{
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for (int i = m_elements.size() - 1; i >= 0; i--)
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{
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if (m_elements[i].get() == element)
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{
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m_cursorIndex = i;
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break;
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}
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}
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std::string token = QueryTree::getTokenName(m_tokens[m_cursorIndex]);
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m_tokens.erase(m_tokens.begin() + m_cursorIndex);
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setText(QString::fromStdString(token));
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updateElements();
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MessageSearchAutocomplete(token).dispatch();
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}
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void QtSmartSearchBox::updateElements()
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{
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m_elements.clear();
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for (const std::string& token : m_tokens)
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{
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std::string name = QueryTree::getTokenName(token);
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std::shared_ptr<QtQueryElement> element = std::make_shared<QtQueryElement>(QString::fromStdString(name), this);
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m_elements.push_back(element);
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element->setObjectName(QString::fromStdString("search_element_" + QueryTree::getTokenTypeName(token)));
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connect(element.get(), SIGNAL(wasChecked(QtQueryElement*)), this, SLOT(onElementSelected(QtQueryElement*)));
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}
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setStyleSheet(TextAccess::createFromFile("data/gui/search_view/search_element.css")->getText().c_str());
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updatePlaceholder();
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layoutElements();
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}
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void QtSmartSearchBox::layoutElements()
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{
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ensurePolished();
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int x = 7;
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bool hasSelected = hasSelectedElements();
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for (size_t i = 0; i <= m_elements.size(); i++)
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{
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if (!hasSelected && static_cast<int>(i) == m_cursorIndex)
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{
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int left, top, right, bottom;
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getTextMargins(&left, &top, &right, &bottom);
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setTextMargins(x - 9, top, right, bottom);
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x += fontMetrics().width(text());
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}
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if (i < m_elements.size())
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{
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QtQueryElement* button = m_elements[i].get();
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QSize size = button->minimumSizeHint();
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int y = (rect().height() - size.height()) / 2.0;
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button->setGeometry(x, y, size.width(), size.height());
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x += size.width() + 5;
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}
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}
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if (hasSelected)
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{
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setTextMargins(width() + 10, 0, 0, 0);
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}
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}
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bool QtSmartSearchBox::hasSelectedElements() const
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{
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for (const std::shared_ptr<QtQueryElement> element : m_elements)
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{
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if (element->isChecked())
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{
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return true;
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}
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}
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return false;
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}
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std::string QtSmartSearchBox::getSelectedString() const
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{
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std::string str;
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||||
for (size_t i = 0; i < m_elements.size(); i++)
|
||||
{
|
||||
if (m_elements[i]->isChecked())
|
||||
{
|
||||
str += m_tokens[i];
|
||||
}
|
||||
}
|
||||
return str;
|
||||
}
|
||||
|
||||
void QtSmartSearchBox::selectAllElementsWith(bool selected)
|
||||
{
|
||||
for (const std::shared_ptr<QtQueryElement> element : m_elements)
|
||||
{
|
||||
element->setChecked(selected);
|
||||
}
|
||||
}
|
||||
|
||||
void QtSmartSearchBox::selectElementsTo(int idx, bool selected)
|
||||
{
|
||||
int low = idx < m_cursorIndex ? idx : m_cursorIndex;
|
||||
int hi = idx > m_cursorIndex ? idx + 1 : m_cursorIndex;
|
||||
|
||||
while (low < hi)
|
||||
{
|
||||
m_elements[low]->setChecked(selected);
|
||||
low++;
|
||||
}
|
||||
|
||||
if (!selected)
|
||||
{
|
||||
m_elements[idx]->setChecked(true);
|
||||
}
|
||||
|
||||
if (idx < m_cursorIndex)
|
||||
{
|
||||
m_cursorIndex = idx;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_cursorIndex = idx + 1;
|
||||
}
|
||||
}
|
||||
|
||||
void QtSmartSearchBox::deleteSelectedElements()
|
||||
{
|
||||
if (!hasSelectedElements())
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
for (int i = m_elements.size() - 1; i >= 0; i--)
|
||||
{
|
||||
if (m_elements[i]->isChecked())
|
||||
{
|
||||
m_tokens.erase(m_tokens.begin() + i);
|
||||
|
||||
if (i < m_cursorIndex)
|
||||
{
|
||||
m_cursorIndex--;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
updateElements();
|
||||
}
|
||||
|
||||
void QtSmartSearchBox::updatePlaceholder()
|
||||
{
|
||||
if (!text().size() && !m_elements.size())
|
||||
{
|
||||
setPlaceholderText("Please enter your search string.");
|
||||
}
|
||||
else
|
||||
{
|
||||
setPlaceholderText("");
|
||||
}
|
||||
}
|
||||
|
||||
void QtSmartSearchBox::clearLineEdit()
|
||||
{
|
||||
setText("");
|
||||
|
||||
if (completer())
|
||||
{
|
||||
completer()->popup()->hide();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user