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ff092f79b33e48847c7a475eb7362ffb9649aa49
qt-creator/src/plugins/qmljseditor/qmljscompletionassist.cpp
Christian Kamm ff092f79b3 QmlJS: Remove LookupContext. 
Use Context or ScopeChain instead.

Change-Id: I2489477eac08774ba41710ee81876aab11b5af24
Reviewed-on: http://codereview.qt.nokia.com/1699
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>
2011-08-08 12:28:55 +02:00

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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
**
**************************************************************************/
#include "qmljscompletionassist.h"
#include "qmljseditorconstants.h"
#include "qmljsreuse.h"
#include "qmlexpressionundercursor.h"
#include <coreplugin/ifile.h>
#include <texteditor/codeassist/iassistinterface.h>
#include <texteditor/codeassist/genericproposal.h>
#include <texteditor/codeassist/functionhintproposal.h>
#include <texteditor/codeassist/ifunctionhintproposalmodel.h>
#include <utils/qtcassert.h>
#include <qmljs/qmljsmodelmanagerinterface.h>
#include <qmljs/parser/qmljsast_p.h>
#include <qmljs/qmljsinterpreter.h>
#include <qmljs/qmljscontext.h>
#include <qmljs/qmljsscopechain.h>
#include <qmljs/qmljsscanner.h>
#include <qmljs/qmljsbind.h>
#include <qmljs/qmljscompletioncontextfinder.h>
#include <qmljs/qmljsscopebuilder.h>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
#include <QtCore/QDebug>
#include <QtCore/QtAlgorithms>
#include <QtCore/QDirIterator>
#include <QtCore/QStringList>
#include <QtGui/QIcon>
using namespace QmlJS;
using namespace QmlJSEditor;
using namespace Internal;
using namespace TextEditor;
namespace {
enum CompletionOrder {
EnumValueOrder = -5,
SnippetOrder = -15,
PropertyOrder = -10,
SymbolOrder = -20,
KeywordOrder = -25,
TypeOrder = -30
};
class EnumerateProperties: private Interpreter::MemberProcessor
{
QSet<const Interpreter::ObjectValue *> _processed;
QHash<QString, const Interpreter::Value *> _properties;
bool _globalCompletion;
bool _enumerateGeneratedSlots;
bool _enumerateSlots;
const Interpreter::ScopeChain *_scopeChain;
const Interpreter::ObjectValue *_currentObject;
public:
EnumerateProperties(const Interpreter::ScopeChain *scopeChain)
: _globalCompletion(false),
_enumerateGeneratedSlots(false),
_enumerateSlots(true),
_scopeChain(scopeChain),
_currentObject(0)
{
}
void setGlobalCompletion(bool globalCompletion)
{
_globalCompletion = globalCompletion;
}
void setEnumerateGeneratedSlots(bool enumerate)
{
_enumerateGeneratedSlots = enumerate;
}
void setEnumerateSlots(bool enumerate)
{
_enumerateSlots = enumerate;
}
QHash<QString, const Interpreter::Value *> operator ()(const Interpreter::Value *value)
{
_processed.clear();
_properties.clear();
_currentObject = Interpreter::value_cast<const Interpreter::ObjectValue *>(value);
enumerateProperties(value);
return _properties;
}
QHash<QString, const Interpreter::Value *> operator ()()
{
_processed.clear();
_properties.clear();
_currentObject = 0;
foreach (const Interpreter::ObjectValue *scope, _scopeChain->all())
enumerateProperties(scope);
return _properties;
}
private:
void insertProperty(const QString &name, const Interpreter::Value *value)
{
_properties.insert(name, value);
}
virtual bool processProperty(const QString &name, const Interpreter::Value *value)
{
insertProperty(name, value);
return true;
}
virtual bool processEnumerator(const QString &name, const Interpreter::Value *value)
{
if (! _globalCompletion)
insertProperty(name, value);
return true;
}
virtual bool processSignal(const QString &, const Interpreter::Value *)
{
return true;
}
virtual bool processSlot(const QString &name, const Interpreter::Value *value)
{
if (_enumerateSlots)
insertProperty(name, value);
return true;
}
virtual bool processGeneratedSlot(const QString &name, const Interpreter::Value *value)
{
if (_enumerateGeneratedSlots || (_currentObject && _currentObject->className().endsWith(QLatin1String("Keys")))) {
// ### FIXME: add support for attached properties.
insertProperty(name, value);
}
return true;
}
void enumerateProperties(const Interpreter::Value *value)
{
if (! value)
return;
else if (const Interpreter::ObjectValue *object = value->asObjectValue()) {
enumerateProperties(object);
}
}
void enumerateProperties(const Interpreter::ObjectValue *object)
{
if (! object || _processed.contains(object))
return;
_processed.insert(object);
enumerateProperties(object->prototype(_scopeChain->context()));
object->processMembers(this);
}
};
const Interpreter::Value *getPropertyValue(const Interpreter::ObjectValue *object,
const QStringList &propertyNames,
const Interpreter::ContextPtr &context)
{
if (propertyNames.isEmpty() || !object)
return 0;
const Interpreter::Value *value = object;
foreach (const QString &name, propertyNames) {
if (const Interpreter::ObjectValue *objectValue = value->asObjectValue()) {
value = objectValue->lookupMember(name, context);
if (!value)
return 0;
} else {
return 0;
}
}
return value;
}
bool isLiteral(AST::Node *ast)
{
if (AST::cast<AST::StringLiteral *>(ast))
return true;
else if (AST::cast<AST::NumericLiteral *>(ast))
return true;
else
return false;
}
} // Anonymous
// -----------------------
// QmlJSAssistProposalItem
// -----------------------
bool QmlJSAssistProposalItem::prematurelyApplies(const QChar &c) const
{
if (data().canConvert<QString>()) // snippet
return false;
return (text().endsWith(QLatin1String(": ")) && c == QLatin1Char(':'))
|| (text().endsWith(QLatin1Char('.')) && c == QLatin1Char('.'));
}
void QmlJSAssistProposalItem::applyContextualContent(TextEditor::BaseTextEditor *editor,
int basePosition) const
{
const int currentPosition = editor->position();
editor->setCursorPosition(basePosition);
editor->remove(currentPosition - basePosition);
QString replaceable;
const QString &content = text();
if (content.endsWith(QLatin1String(": ")))
replaceable = QLatin1String(": ");
else if (content.endsWith(QLatin1Char('.')))
replaceable = QLatin1String(".");
int replacedLength = 0;
for (int i = 0; i < replaceable.length(); ++i) {
const QChar a = replaceable.at(i);
const QChar b = editor->characterAt(editor->position() + i);
if (a == b)
++replacedLength;
else
break;
}
const int length = editor->position() - basePosition + replacedLength;
editor->replace(length, content);
}
// -------------------------
// FunctionHintProposalModel
// -------------------------
class FunctionHintProposalModel : public TextEditor::IFunctionHintProposalModel
{
public:
FunctionHintProposalModel(const QString &functionName, const QStringList &signature)
: m_functionName(functionName)
, m_signature(signature)
, m_minimumArgumentCount(signature.size())
{}
virtual void reset() {}
virtual int size() const { return 1; }
virtual QString text(int index) const;
virtual int activeArgument(const QString &prefix) const;
private:
QString m_functionName;
QStringList m_signature;
int m_minimumArgumentCount;
};
QString FunctionHintProposalModel::text(int index) const
{
Q_UNUSED(index)
QString prettyMethod;
prettyMethod += QString::fromLatin1("function ");
prettyMethod += m_functionName;
prettyMethod += QLatin1Char('(');
for (int i = 0; i < m_minimumArgumentCount; ++i) {
if (i != 0)
prettyMethod += QLatin1String(", ");
QString arg = m_signature.at(i);
if (arg.isEmpty()) {
arg = QLatin1String("arg");
arg += QString::number(i + 1);
}
prettyMethod += arg;
}
prettyMethod += QLatin1Char(')');
return prettyMethod;
}
int FunctionHintProposalModel::activeArgument(const QString &prefix) const
{
int argnr = 0;
int parcount = 0;
Scanner tokenize;
const QList<Token> tokens = tokenize(prefix);
for (int i = 0; i < tokens.count(); ++i) {
const Token &tk = tokens.at(i);
if (tk.is(Token::LeftParenthesis))
++parcount;
else if (tk.is(Token::RightParenthesis))
--parcount;
else if (! parcount && tk.is(Token::Colon))
++argnr;
}
if (parcount < 0)
return -1;
return argnr;
}
// -----------------------------
// QmlJSCompletionAssistProvider
// -----------------------------
bool QmlJSCompletionAssistProvider::supportsEditor(const QString &editorId) const
{
return editorId == QLatin1String(Constants::C_QMLJSEDITOR_ID);
}
int QmlJSCompletionAssistProvider::activationCharSequenceLength() const
{
return 1;
}
bool QmlJSCompletionAssistProvider::isActivationCharSequence(const QString &sequence) const
{
return isActivationChar(sequence.at(0));
}
bool QmlJSCompletionAssistProvider::isContinuationChar(const QChar &c) const
{
return isIdentifierChar(c, false);
}
IAssistProcessor *QmlJSCompletionAssistProvider::createProcessor() const
{
return new QmlJSCompletionAssistProcessor;
}
// ------------------------------
// QmlJSCompletionAssistProcessor
// ------------------------------
QmlJSCompletionAssistProcessor::QmlJSCompletionAssistProcessor()
: m_startPosition(0)
, m_snippetCollector(Constants::QML_SNIPPETS_GROUP_ID, iconForColor(Qt::red), SnippetOrder)
{}
QmlJSCompletionAssistProcessor::~QmlJSCompletionAssistProcessor()
{}
IAssistProposal *QmlJSCompletionAssistProcessor::createContentProposal() const
{
IGenericProposalModel *model = new QmlJSAssistProposalModel(m_completions);
IAssistProposal *proposal = new GenericProposal(m_startPosition, model);
return proposal;
}
IAssistProposal *QmlJSCompletionAssistProcessor::createHintProposal(const QString &functionName,
const QStringList &signature) const
{
IFunctionHintProposalModel *model = new FunctionHintProposalModel(functionName, signature);
IAssistProposal *proposal = new FunctionHintProposal(m_startPosition, model);
return proposal;
}
IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface *assistInterface)
{
m_interface.reset(static_cast<const QmlJSCompletionAssistInterface *>(assistInterface));
if (assistInterface->reason() == IdleEditor && !acceptsIdleEditor())
return 0;
const QString &fileName = m_interface->file()->fileName();
m_startPosition = assistInterface->position();
while (isIdentifierChar(m_interface->document()->characterAt(m_startPosition - 1), false, false))
--m_startPosition;
m_completions.clear();
const QmlJSCompletionAssistInterface *qmlInterface =
static_cast<const QmlJSCompletionAssistInterface *>(assistInterface);
const SemanticInfo &semanticInfo = qmlInterface->semanticInfo();
if (!semanticInfo.isValid())
return 0;
const Document::Ptr document = semanticInfo.document;
const QFileInfo currentFileInfo(fileName);
bool isQmlFile = false;
if (currentFileInfo.suffix() == QLatin1String("qml"))
isQmlFile = true;
const QList<AST::Node *> path = semanticInfo.rangePath(m_interface->position());
const Interpreter::ContextPtr &context = semanticInfo.context;
const Interpreter::ScopeChain &scopeChain = semanticInfo.scopeChain(path);
// Search for the operator that triggered the completion.
QChar completionOperator;
if (m_startPosition > 0)
completionOperator = m_interface->document()->characterAt(m_startPosition - 1);
QTextCursor startPositionCursor(qmlInterface->document());
startPositionCursor.setPosition(m_startPosition);
CompletionContextFinder contextFinder(startPositionCursor);
const Interpreter::ObjectValue *qmlScopeType = 0;
if (contextFinder.isInQmlContext()) {
// find the enclosing qml object
// ### this should use semanticInfo.declaringMember instead, but that may also return functions
int i;
for (i = path.size() - 1; i >= 0; --i) {
AST::Node *node = path[i];
if (AST::cast<AST::UiObjectDefinition *>(node) || AST::cast<AST::UiObjectBinding *>(node)) {
qmlScopeType = document->bind()->findQmlObject(node);
if (qmlScopeType)
break;
}
}
// grouped property bindings change the scope type
for (i++; i < path.size(); ++i) {
AST::UiObjectDefinition *objDef = AST::cast<AST::UiObjectDefinition *>(path[i]);
if (!objDef || !document->bind()->isGroupedPropertyBinding(objDef))
break;
const Interpreter::ObjectValue *newScopeType = qmlScopeType;
for (AST::UiQualifiedId *it = objDef->qualifiedTypeNameId; it; it = it->next) {
if (!newScopeType || !it->name) {
newScopeType = 0;
break;
}
const Interpreter::Value *v = newScopeType->lookupMember(it->name->asString(), context);
v = context->lookupReference(v);
newScopeType = Interpreter::value_cast<const Interpreter::ObjectValue *>(v);
}
if (!newScopeType)
break;
qmlScopeType = newScopeType;
}
// fallback to getting the base type object
if (!qmlScopeType)
qmlScopeType = context->lookupType(document.data(), contextFinder.qmlObjectTypeName());
}
if (contextFinder.isInStringLiteral()) {
// get the text of the literal up to the cursor position
//QTextCursor tc = textWidget->textCursor();
QTextCursor tc(qmlInterface->document());
tc.setPosition(qmlInterface->position());
QmlExpressionUnderCursor expressionUnderCursor;
expressionUnderCursor(tc);
QString literalText = expressionUnderCursor.text();
QTC_ASSERT(!literalText.isEmpty() && (
literalText.at(0) == QLatin1Char('"')
|| literalText.at(0) == QLatin1Char('\'')), return 0);
literalText = literalText.mid(1);
if (contextFinder.isInImport()) {
QStringList patterns;
patterns << QLatin1String("*.qml") << QLatin1String("*.js");
if (completeFileName(document->path(), literalText, patterns))
return createContentProposal();
return 0;
}
const Interpreter::Value *value =
getPropertyValue(qmlScopeType, contextFinder.bindingPropertyName(), context);
if (!value) {
// do nothing
} else if (value->asUrlValue()) {
if (completeUrl(document->path(), literalText))
return createContentProposal();
}
// ### enum completion?
// completion gets triggered for / in string literals, if we don't
// return here, this will mean the snippet completion pops up for
// each / in a string literal that is not triggering file completion
return 0;
} else if (completionOperator.isSpace()
|| completionOperator.isNull()
|| isDelimiterChar(completionOperator)
|| (completionOperator == QLatin1Char('(')
&& m_startPosition != m_interface->position())) {
bool doGlobalCompletion = true;
bool doQmlKeywordCompletion = true;
bool doJsKeywordCompletion = true;
bool doQmlTypeCompletion = false;
if (contextFinder.isInLhsOfBinding() && qmlScopeType) {
doGlobalCompletion = false;
doJsKeywordCompletion = false;
doQmlTypeCompletion = true;
EnumerateProperties enumerateProperties(&scopeChain);
enumerateProperties.setGlobalCompletion(true);
enumerateProperties.setEnumerateGeneratedSlots(true);
enumerateProperties.setEnumerateSlots(false);
// id: is special
BasicProposalItem *idProposalItem = new QmlJSAssistProposalItem;
idProposalItem->setText(QLatin1String("id: "));
idProposalItem->setIcon(m_interface->symbolIcon());
idProposalItem->setOrder(PropertyOrder);
m_completions.append(idProposalItem);
addCompletionsPropertyLhs(enumerateProperties(qmlScopeType),
m_interface->symbolIcon(),
PropertyOrder,
contextFinder.isAfterOnInLhsOfBinding());
if (ScopeBuilder::isPropertyChangesObject(context, qmlScopeType)
&& scopeChain.qmlScopeObjects().size() == 2) {
addCompletions(enumerateProperties(scopeChain.qmlScopeObjects().first()),
m_interface->symbolIcon(),
SymbolOrder);
}
}
if (contextFinder.isInRhsOfBinding() && qmlScopeType) {
doQmlKeywordCompletion = false;
// complete enum values for enum properties
const Interpreter::Value *value =
getPropertyValue(qmlScopeType, contextFinder.bindingPropertyName(), context);
if (const Interpreter::QmlEnumValue *enumValue =
dynamic_cast<const Interpreter::QmlEnumValue *>(value)) {
foreach (const QString &key, enumValue->keys())
addCompletion(key, m_interface->symbolIcon(),
EnumValueOrder, QString("\"%1\"").arg(key));
}
}
if (!contextFinder.isInImport() && !contextFinder.isInQmlContext())
doQmlTypeCompletion = true;
if (doQmlTypeCompletion) {
if (const Interpreter::ObjectValue *qmlTypes = scopeChain.qmlTypes()) {
EnumerateProperties enumerateProperties(&scopeChain);
addCompletions(enumerateProperties(qmlTypes), m_interface->symbolIcon(), TypeOrder);
}
}
if (doGlobalCompletion) {
// It's a global completion.
EnumerateProperties enumerateProperties(&scopeChain);
enumerateProperties.setGlobalCompletion(true);
addCompletions(enumerateProperties(), m_interface->symbolIcon(), SymbolOrder);
}
if (doJsKeywordCompletion) {
// add js keywords
addCompletions(Scanner::keywords(), m_interface->keywordIcon(), KeywordOrder);
}
// add qml extra words
if (doQmlKeywordCompletion && isQmlFile) {
static QStringList qmlWords;
static QStringList qmlWordsAlsoInJs;
if (qmlWords.isEmpty()) {
qmlWords << QLatin1String("property")
//<< QLatin1String("readonly")
<< QLatin1String("signal")
<< QLatin1String("import");
}
if (qmlWordsAlsoInJs.isEmpty())
qmlWordsAlsoInJs << QLatin1String("default") << QLatin1String("function");
addCompletions(qmlWords, m_interface->keywordIcon(), KeywordOrder);
if (!doJsKeywordCompletion)
addCompletions(qmlWordsAlsoInJs, m_interface->keywordIcon(), KeywordOrder);
}
}
else if (completionOperator == QLatin1Char('.') || completionOperator == QLatin1Char('(')) {
// Look at the expression under cursor.
//QTextCursor tc = textWidget->textCursor();
QTextCursor tc(qmlInterface->document());
tc.setPosition(m_startPosition - 1);
QmlExpressionUnderCursor expressionUnderCursor;
QmlJS::AST::ExpressionNode *expression = expressionUnderCursor(tc);
if (expression != 0 && ! isLiteral(expression)) {
// Evaluate the expression under cursor.
Interpreter::ValueOwner *interp = context->valueOwner();
const Interpreter::Value *value =
interp->convertToObject(scopeChain.evaluate(expression));
//qDebug() << "type:" << interp->typeId(value);
if (value && completionOperator == QLatin1Char('.')) { // member completion
EnumerateProperties enumerateProperties(&scopeChain);
if (contextFinder.isInLhsOfBinding() && qmlScopeType) {
enumerateProperties.setEnumerateGeneratedSlots(true);
addCompletionsPropertyLhs(enumerateProperties(value),
m_interface->symbolIcon(),
PropertyOrder,
contextFinder.isAfterOnInLhsOfBinding());
} else
addCompletions(enumerateProperties(value), m_interface->symbolIcon(), SymbolOrder);
} else if (value
&& completionOperator == QLatin1Char('(')
&& m_startPosition == m_interface->position()) {
// function completion
if (const Interpreter::FunctionValue *f = value->asFunctionValue()) {
QString functionName = expressionUnderCursor.text();
int indexOfDot = functionName.lastIndexOf(QLatin1Char('.'));
if (indexOfDot != -1)
functionName = functionName.mid(indexOfDot + 1);
QStringList signature;
for (int i = 0; i < f->argumentCount(); ++i)
signature.append(f->argumentName(i));
return createHintProposal(functionName.trimmed(), signature);
}
}
}
if (! m_completions.isEmpty())
return createContentProposal();
return 0;
}
if (isQmlFile
&& (completionOperator.isNull()
|| completionOperator.isSpace()
|| isDelimiterChar(completionOperator))) {
m_completions.append(m_snippetCollector.collect());
}
if (! m_completions.isEmpty())
return createContentProposal();
return 0;
}
bool QmlJSCompletionAssistProcessor::acceptsIdleEditor() const
{
const int cursorPos = m_interface->position();
bool maybeAccept = false;
const QChar &charBeforeCursor = m_interface->document()->characterAt(cursorPos - 1);
if (isActivationChar(charBeforeCursor)) {
maybeAccept = true;
} else {
const QChar &charUnderCursor = m_interface->document()->characterAt(cursorPos);
if (isIdentifierChar(charBeforeCursor)
&& ((charUnderCursor.isSpace()
|| charUnderCursor.isNull()
|| isDelimiterChar(charUnderCursor))
|| isIdentifierChar(charUnderCursor))) {
int startPos = cursorPos - 1;
for (; startPos != -1; --startPos) {
if (!isIdentifierChar(m_interface->document()->characterAt(startPos)))
break;
}
++startPos;
const QString &word = m_interface->textAt(startPos, cursorPos - startPos);
if (word.length() > 2 && isIdentifierChar(word.at(0), true)) {
for (int i = 1; i < word.length(); ++i) {
if (!isIdentifierChar(word.at(i)))
return false;
}
maybeAccept = true;
}
}
}
if (maybeAccept) {
QTextCursor tc(m_interface->document());
tc.setPosition(m_interface->position());
const QTextBlock &block = tc.block();
const QString &blockText = block.text();
const int blockState = qMax(0, block.previous().userState()) & 0xff;
Scanner scanner;
const QList<Token> tokens = scanner(blockText, blockState);
const int column = block.position() - m_interface->position();
foreach (const Token &tk, tokens) {
if (column >= tk.begin() && column <= tk.end()) {
if (charBeforeCursor == QLatin1Char('/') && tk.is(Token::String))
return true; // path completion inside string literals
if (tk.is(Token::Comment) || tk.is(Token::String) || tk.is(Token::RegExp))
return false;
break;
}
}
if (charBeforeCursor != QLatin1Char('/'))
return true;
}
return false;
}
bool QmlJSCompletionAssistProcessor::completeFileName(const QString &relativeBasePath,
const QString &fileName,
const QStringList &patterns)
{
const QFileInfo fileInfo(fileName);
QString directoryPrefix;
if (fileInfo.isRelative()) {
directoryPrefix = relativeBasePath;
directoryPrefix += QDir::separator();
directoryPrefix += fileInfo.path();
} else {
directoryPrefix = fileInfo.path();
}
if (!QFileInfo(directoryPrefix).exists())
return false;
QDirIterator dirIterator(directoryPrefix,
patterns,
QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot);
while (dirIterator.hasNext()) {
dirIterator.next();
const QString fileName = dirIterator.fileName();
BasicProposalItem *item = new QmlJSAssistProposalItem;
item->setText(fileName);
item->setIcon(m_interface->fileNameIcon());
m_completions.append(item);
}
return !m_completions.isEmpty();
}
bool QmlJSCompletionAssistProcessor::completeUrl(const QString &relativeBasePath, const QString &urlString)
{
const QUrl url(urlString);
QString fileName = url.toLocalFile();
if (fileName.isEmpty())
return false;
return completeFileName(relativeBasePath, fileName);
}
void QmlJSCompletionAssistProcessor::addCompletionsPropertyLhs(const QHash<QString,
const QmlJS::Interpreter::Value *> &newCompletions,
const QIcon &icon,
int order,
bool afterOn)
{
QHashIterator<QString, const Interpreter::Value *> it(newCompletions);
while (it.hasNext()) {
it.next();
QString itemText = it.key();
QString postfix;
if (!itemText.isEmpty() && itemText.at(0).isLower())
postfix = QLatin1String(": ");
if (afterOn)
postfix = QLatin1String(" {");
if (const Interpreter::QmlObjectValue *qmlValue =
dynamic_cast<const Interpreter::QmlObjectValue *>(it.value())) {
// to distinguish "anchors." from "gradient:" we check if the right hand side
// type is instantiatable or is the prototype of an instantiatable object
if (qmlValue->hasChildInPackage())
itemText.append(postfix);
else
itemText.append(QLatin1Char('.'));
} else {
itemText.append(postfix);
}
addCompletion(itemText, icon, order);
}
}
void QmlJSCompletionAssistProcessor::addCompletion(const QString &text,
const QIcon &icon,
int order,
const QVariant &data)
{
if (text.isEmpty())
return;
BasicProposalItem *item = new QmlJSAssistProposalItem;
item->setText(text);
item->setIcon(icon);
item->setOrder(order);
item->setData(data);
m_completions.append(item);
}
void QmlJSCompletionAssistProcessor::addCompletions(const QHash<QString,
const QmlJS::Interpreter::Value *> &newCompletions,
const QIcon &icon,
int order)
{
QHashIterator<QString, const Interpreter::Value *> it(newCompletions);
while (it.hasNext()) {
it.next();
addCompletion(it.key(), icon, order);
}
}
void QmlJSCompletionAssistProcessor::addCompletions(const QStringList &newCompletions,
const QIcon &icon,
int order)
{
foreach (const QString &text, newCompletions)
addCompletion(text, icon, order);
}
// ------------------------------
// QmlJSCompletionAssistInterface
// ------------------------------
QmlJSCompletionAssistInterface::QmlJSCompletionAssistInterface(QTextDocument *document,
int position,
Core::IFile *file,
TextEditor::AssistReason reason,
const SemanticInfo &info)
: DefaultAssistInterface(document, position, file, reason)
, m_semanticInfo(info)
, m_darkBlueIcon(iconForColor(Qt::darkBlue))
, m_darkYellowIcon(iconForColor(Qt::darkYellow))
, m_darkCyanIcon(iconForColor(Qt::darkCyan))
{}
const SemanticInfo &QmlJSCompletionAssistInterface::semanticInfo() const
{
return m_semanticInfo;
}
namespace {
struct QmlJSLessThan
{
bool operator() (const BasicProposalItem *a, const BasicProposalItem *b)
{
if (a->order() != b->order())
return a->order() > b->order();
else if (a->text().isEmpty())
return true;
else if (b->text().isEmpty())
return false;
else if (a->data().isValid() != b->data().isValid())
return a->data().isValid();
else if (a->text().at(0).isUpper() && b->text().at(0).isLower())
return false;
else if (a->text().at(0).isLower() && b->text().at(0).isUpper())
return true;
return a->text() < b->text();
}
};
} // Anonymous
// -------------------------
// QmlJSAssistProposalModel
// -------------------------
void QmlJSAssistProposalModel::sort()
{
qSort(currentItems().first, currentItems().second, QmlJSLessThan());
}
bool QmlJSAssistProposalModel::keepPerfectMatch(TextEditor::AssistReason reason) const
{
return reason == ExplicitlyInvoked;
}
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