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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.codeInsight.completion;
import com.intellij.codeInsight.AutoPopupController;
import com.intellij.codeInsight.CharTailType;
import com.intellij.codeInsight.TailType;
import com.intellij.codeInsight.TailTypes;
import com.intellij.codeInsight.lookup.Lookup;
import com.intellij.codeInsight.lookup.LookupElement;
import com.intellij.codeInsight.lookup.LookupItem;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import com.intellij.psi.codeStyle.CommonCodeStyleSettings;
import org.jetbrains.annotations.NotNull;
public class DefaultInsertHandler extends TemplateInsertHandler implements Cloneable {
public static final DefaultInsertHandler NO_TAIL_HANDLER = new DefaultInsertHandler(){
@Override
protected TailType getTailType(char completionChar, LookupItem item) {
return TailType.NONE;
}
};
@Override
public void handleInsert(final InsertionContext context, LookupElement item) {
super.handleInsert(context, item);
handleInsertInner(context, (LookupItem)item, context.getCompletionChar());
}
private void handleInsertInner(InsertionContext context, LookupItem item, final char completionChar) {
final Project project = context.getProject();
final Editor editor = context.getEditor();
final Document document = editor.getDocument();
PsiDocumentManager.getInstance(project).commitDocument(document);
TailType tailType = getTailType(completionChar, item);
InsertHandlerState state = new InsertHandlerState(context.getSelectionEndOffset(), context.getSelectionEndOffset());
if (completionChar == Lookup.REPLACE_SELECT_CHAR) {
removeEndOfIdentifier(context);
}
else if(context.getOffsetMap().getOffset(CompletionInitializationContext.IDENTIFIER_END_OFFSET) != context.getSelectionEndOffset()) {
JavaCompletionUtil.resetParensInfo(context.getOffsetMap());
}
handleParentheses(false, false, tailType, context, state);
context.setTailOffset(state.tailOffset);
state.caretOffset = processTail(tailType, state.caretOffset, state.tailOffset, editor);
editor.getSelectionModel().removeSelection();
if (tailType == TailType.DOT || context.getCompletionChar() == '.') {
AutoPopupController.getInstance(project).autoPopupMemberLookup(editor, null);
}
}
private static void handleParentheses(final boolean hasParams, final boolean needParenth, TailType tailType, InsertionContext context, InsertHandlerState myState){
final Document document = context.getEditor().getDocument();
boolean insertRightParenth = context.getCompletionChar() != Lookup.COMPLETE_STATEMENT_SELECT_CHAR;
if (needParenth){
if (context.getOffsetMap().getOffset(JavaCompletionUtil.LPAREN_OFFSET) >= 0 && context.getOffsetMap().getOffset(JavaCompletionUtil.ARG_LIST_END_OFFSET) >= 0){
myState.tailOffset = context.getOffsetMap().getOffset(JavaCompletionUtil.ARG_LIST_END_OFFSET);
if (context.getOffsetMap().getOffset(JavaCompletionUtil.RPAREN_OFFSET) < 0 && insertRightParenth){
document.insertString(myState.tailOffset, ")");
myState.tailOffset += 1;
}
if (hasParams){
myState.caretOffset = context.getOffsetMap().getOffset(JavaCompletionUtil.LPAREN_OFFSET) + 1;
}
else{
myState.caretOffset = context.getOffsetMap().getOffset(JavaCompletionUtil.ARG_LIST_END_OFFSET);
}
}
else{
final CommonCodeStyleSettings styleSettings = context.getCodeStyleSettings();
myState.tailOffset = context.getSelectionEndOffset();
myState.caretOffset = context.getSelectionEndOffset();
if(styleSettings.SPACE_BEFORE_METHOD_CALL_PARENTHESES){
document.insertString(myState.tailOffset++, " ");
myState.caretOffset ++;
}
if (insertRightParenth) {
final CharSequence charsSequence = document.getCharsSequence();
if (charsSequence.length() <= myState.tailOffset || charsSequence.charAt(myState.tailOffset) != '(') {
document.insertString(myState.tailOffset, "(");
}
document.insertString(myState.tailOffset + 1, ")");
if (hasParams){
myState.tailOffset += 2;
myState.caretOffset++;
}
else{
if (tailType != TailTypes.CALL_RPARENTH) {
myState.tailOffset += 2;
myState.caretOffset += 2;
}
else {
myState.tailOffset++;
myState.caretOffset++;
}
}
}
else{
document.insertString(myState.tailOffset++, "(");
myState.caretOffset ++;
}
if(hasParams && styleSettings.SPACE_WITHIN_METHOD_CALL_PARENTHESES){
document.insertString(myState.caretOffset++, " ");
myState.tailOffset++;
}
}
}
}
public static void removeEndOfIdentifier(InsertionContext context){
final Document document = context.getEditor().getDocument();
JavaCompletionUtil.initOffsets(context.getFile(), context.getOffsetMap());
document.deleteString(context.getSelectionEndOffset(), context.getOffsetMap().getOffset(CompletionInitializationContext.IDENTIFIER_END_OFFSET));
if(context.getOffsetMap().getOffset(JavaCompletionUtil.LPAREN_OFFSET) > 0){
document.deleteString(context.getOffsetMap().getOffset(JavaCompletionUtil.LPAREN_OFFSET),
context.getOffsetMap().getOffset(JavaCompletionUtil.ARG_LIST_END_OFFSET));
JavaCompletionUtil.resetParensInfo(context.getOffsetMap());
}
}
protected TailType getTailType(final char completionChar, LookupItem item){
switch(completionChar){
case '.': return new CharTailType('.', false);
case ',': return TailType.COMMA;
case ';': return TailType.SEMICOLON;
case '=': return TailType.EQ;
case ' ': return TailType.SPACE;
case ':': return TailType.CASE_COLON; //?
case '<':
case '>':
case '\"':
}
final TailType attr = item.getTailType();
return attr == TailType.UNKNOWN ? TailType.NONE : attr;
}
private static int processTail(TailType tailType, int caretOffset, int tailOffset, Editor editor) {
editor.getCaretModel().moveToOffset(caretOffset);
tailType.processTail(editor, tailOffset);
return editor.getCaretModel().getOffset();
}
@Override
protected void populateInsertMap(@NotNull final PsiFile file, @NotNull final OffsetMap offsetMap) {
JavaCompletionUtil.initOffsets(file, offsetMap);
}
public static class InsertHandlerState{
int tailOffset;
int caretOffset;
public InsertHandlerState(int caretOffset, int tailOffset){
this.caretOffset = caretOffset;
this.tailOffset = tailOffset;
}
}
}
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