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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "snippetoverlay.h"
#include <utils/algorithm.h>
#include <utils/qtcassert.h>
namespace TextEditor {
namespace Internal {
void SnippetOverlay::clear()
{
TextEditorOverlay::clear();
m_selections.clear();
m_variables.clear();
}
void SnippetOverlay::addSnippetSelection(const QTextCursor &cursor,
const QColor &color,
NameMangler *mangler,
int variableIndex)
{
m_variables[variableIndex] << selections().size();
SnippetSelection selection;
selection.variableIndex = variableIndex;
selection.mangler = mangler;
m_selections << selection;
addOverlaySelection(cursor, color, color, TextEditorOverlay::ExpandBegin);
}
void SnippetOverlay::setFinalSelection(const QTextCursor &cursor, const QColor &color)
{
m_finalSelectionIndex = selections().size();
addOverlaySelection(cursor, color, color, TextEditorOverlay::ExpandBegin);
}
void SnippetOverlay::updateEquivalentSelections(const QTextCursor &cursor)
{
const int ¤tIndex = indexForCursor(cursor);
if (currentIndex < 0)
return;
const QString ¤tText = cursorForIndex(currentIndex).selectedText();
const QList<int> &equivalents = m_variables.value(m_selections[currentIndex].variableIndex);
for (int i : equivalents) {
if (i == currentIndex)
continue;
QTextCursor cursor = cursorForIndex(i);
const QString &equivalentText = cursor.selectedText();
if (currentText != equivalentText) {
cursor.joinPreviousEditBlock();
cursor.insertText(currentText);
cursor.endEditBlock();
}
}
}
void SnippetOverlay::accept()
{
hide();
for (int i = 0; i < m_selections.size(); ++i) {
if (NameMangler *mangler = m_selections[i].mangler) {
QTextCursor cursor = cursorForIndex(i);
const QString current = cursor.selectedText();
const QString result = mangler->mangle(current);
if (result != current) {
cursor.joinPreviousEditBlock();
cursor.insertText(result);
cursor.endEditBlock();
}
}
}
clear();
}
bool SnippetOverlay::hasCursorInSelection(const QTextCursor &cursor) const
{
return indexForCursor(cursor) >= 0;
}
QTextCursor SnippetOverlay::firstSelectionCursor() const
{
const QList<OverlaySelection> selections = TextEditorOverlay::selections();
return selections.isEmpty() ? QTextCursor() : cursorForSelection(selections.first());
}
QTextCursor SnippetOverlay::nextSelectionCursor(const QTextCursor &cursor) const
{
const QList<OverlaySelection> selections = TextEditorOverlay::selections();
if (selections.isEmpty())
return {};
const SnippetSelection ¤tSelection = selectionForCursor(cursor);
if (currentSelection.variableIndex >= 0) {
int nextVariableIndex = currentSelection.variableIndex + 1;
if (!m_variables.contains(nextVariableIndex)) {
if (m_finalSelectionIndex >= 0)
return cursorForIndex(m_finalSelectionIndex);
nextVariableIndex = m_variables.firstKey();
}
for (int selectionIndex : m_variables[nextVariableIndex]) {
if (selections[selectionIndex].m_cursor_begin.position() > cursor.position())
return cursorForIndex(selectionIndex);
}
return cursorForIndex(m_variables[nextVariableIndex].first());
}
// currently not over a variable simply select the next available one
for (const OverlaySelection &candidate : selections) {
if (candidate.m_cursor_begin.position() > cursor.position())
return cursorForSelection(candidate);
}
return cursorForSelection(selections.first());
}
QTextCursor SnippetOverlay::previousSelectionCursor(const QTextCursor &cursor) const
{
const QList<OverlaySelection> selections = TextEditorOverlay::selections();
if (selections.isEmpty())
return {};
const SnippetSelection ¤tSelection = selectionForCursor(cursor);
if (currentSelection.variableIndex >= 0) {
int previousVariableIndex = currentSelection.variableIndex - 1;
if (!m_variables.contains(previousVariableIndex))
previousVariableIndex = m_variables.lastKey();
const QList<int> &equivalents = m_variables[previousVariableIndex];
for (int i = equivalents.size() - 1; i >= 0; --i) {
if (selections.at(equivalents.at(i)).m_cursor_end.position() < cursor.position())
return cursorForIndex(equivalents.at(i));
}
return cursorForIndex(m_variables[previousVariableIndex].last());
}
// currently not over a variable simply select the previous available one
for (int i = selections.size() - 1; i >= 0; --i) {
if (selections.at(i).m_cursor_end.position() < cursor.position())
return cursorForIndex(i);
}
return cursorForSelection(selections.last());
}
bool SnippetOverlay::isFinalSelection(const QTextCursor &cursor) const
{
return m_finalSelectionIndex >= 0 ? cursor == cursorForIndex(m_finalSelectionIndex) : false;
}
int SnippetOverlay::indexForCursor(const QTextCursor &cursor) const
{
return Utils::indexOf(selections(),
[pos = cursor.position()](const OverlaySelection &selection) {
return selection.m_cursor_begin.position() <= pos
&& selection.m_cursor_end.position() >= pos;
});
}
SnippetOverlay::SnippetSelection SnippetOverlay::selectionForCursor(const QTextCursor &cursor) const
{
return m_selections.value(indexForCursor(cursor));
}
} // namespace Internal
} // namespace TextEditor
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