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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "jsoneditor.h"
#include "autocompleter.h"
#include "textdocument.h"
#include "texteditor.h"
#include "texteditortr.h"
#include "textindenter.h"
#include <utils/mimeconstants.h>
namespace TextEditor::Internal {
const char JSON_EDITOR_ID[] = "Editors.Json";
static int startsWith(const QString &line, const QString &closingChars)
{
int count = 0;
for (const QChar &lineChar : line) {
if (closingChars.contains(lineChar))
++count;
else if (!lineChar.isSpace())
break;
}
return count;
}
class JsonAutoCompleter : public AutoCompleter
{
bool contextAllowsElectricCharacters(const QTextCursor &cursor) const override
{
return !isInString(cursor);
}
bool contextAllowsAutoBrackets(const QTextCursor &cursor, const QString &) const override
{
return !isInString(cursor);
}
QString insertMatchingBrace(const QTextCursor &cursor,
const QString &text,
QChar lookAhead,
bool skipChars,
int *skippedChars) const override
{
Q_UNUSED(cursor)
if (text.isEmpty())
return QString();
const QChar current = text.at(0);
switch (current.unicode()) {
case '{':
return QStringLiteral("}");
case '[':
return QStringLiteral("]");
case ']':
case '}':
if (current == lookAhead && skipChars)
++*skippedChars;
break;
default:
break;
}
return QString();
}
bool contextAllowsAutoQuotes(const QTextCursor &cursor, const QString &) const override
{
return !isInString(cursor);
}
QString insertMatchingQuote(const QTextCursor &cursor,
const QString &text,
QChar lookAhead,
bool skipChars,
int *skippedChars) const override
{
Q_UNUSED(cursor)
static const QChar quote('"');
if (text.isEmpty() || text != quote)
return QString();
if (lookAhead == quote && skipChars) {
++*skippedChars;
return QString();
}
return quote;
}
bool isInString(const QTextCursor &cursor) const override
{
bool result = false;
const QString text = cursor.block().text();
const int position = qMin(cursor.positionInBlock(), text.size());
for (int i = 0; i < position; ++i) {
if (text.at(i) == '"') {
if (!result || text[i - 1] != '\\')
result = !result;
}
}
return result;
}
};
class JsonIndenter : public TextIndenter
{
public:
JsonIndenter(QTextDocument *doc) : TextIndenter(doc) {}
bool isElectricCharacter(const QChar &c) const override
{
static QString echars("{}[]");
return echars.contains(c);
}
int indentFor(const QTextBlock &block,
const TabSettings &tabSettings,
int /*cursorPositionInEditor*/) override
{
QTextBlock previous = block.previous();
if (!previous.isValid())
return 0;
QString previousText = previous.text();
while (previousText.trimmed().isEmpty()) {
previous = previous.previous();
if (!previous.isValid())
return 0;
previousText = previous.text();
}
int indent = tabSettings.indentationColumn(previousText);
int adjust = previousText.count('{') + previousText.count('[');
adjust -= previousText.count('}') + previousText.count(']');
adjust += startsWith(previousText, "}]") - startsWith(block.text(), "}]");
adjust *= tabSettings.m_indentSize;
return qMax(0, indent + adjust);
}
void indentBlock(const QTextBlock &block,
const QChar &typedChar,
const TabSettings &tabSettings,
int cursorPositionInEditor) override
{
Q_UNUSED(typedChar)
tabSettings.indentLine(block, indentFor(block, tabSettings, cursorPositionInEditor));
}
};
class JsonEditorFactory final : public TextEditorFactory
{
public:
JsonEditorFactory()
{
setId(JSON_EDITOR_ID);
setDisplayName(Tr::tr("JSON Editor"));
addMimeType(Utils::Constants::JSON_MIMETYPE);
setEditorCreator([] { return new BaseTextEditor; });
setEditorWidgetCreator([] { return new TextEditorWidget; });
setDocumentCreator([] { return new TextDocument(JSON_EDITOR_ID); });
setAutoCompleterCreator([] { return new JsonAutoCompleter; });
setIndenterCreator([](QTextDocument *doc) { return new JsonIndenter(doc); });
setOptionalActionMask(OptionalActions::Format);
setUseGenericHighlighter(true);
}
};
void setupJsonEditor()
{
static JsonEditorFactory theJsonEditorFactory;
}
} // TextEditor::Internal
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