1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
**************************************************************************/
#include "completionsupport.h"
#include "completionwidget.h"
#include "icompletioncollector.h"
#include <coreplugin/icore.h>
#include <extensionsystem/pluginmanager.h>
#include <texteditor/itexteditable.h>
#include <utils/qtcassert.h>
#include <QtCore/QString>
#include <QtCore/QList>
#include <algorithm>
using namespace TextEditor;
using namespace TextEditor::Internal;
CompletionSupport *CompletionSupport::instance()
{
static CompletionSupport *m_instance = 0;
if (!m_instance)
m_instance = new CompletionSupport;
return m_instance;
}
CompletionSupport::CompletionSupport()
: QObject(Core::ICore::instance()),
m_completionList(0),
m_startPosition(0),
m_checkCompletionTrigger(false),
m_editor(0),
m_completionCollector(0)
{
m_completionCollectors = ExtensionSystem::PluginManager::instance()
->getObjects<ICompletionCollector>();
}
void CompletionSupport::performCompletion(const CompletionItem &item)
{
item.m_collector->complete(item);
m_checkCompletionTrigger = true;
}
void CompletionSupport::cleanupCompletions()
{
if (m_completionList)
disconnect(m_completionList, SIGNAL(destroyed(QObject*)),
this, SLOT(cleanupCompletions()));
m_completionList = 0;
m_completionCollector->cleanup();
if (m_checkCompletionTrigger) {
m_checkCompletionTrigger = false;
// Only check for completion trigger when some text was entered
if (m_editor->position() > m_startPosition)
autoComplete(m_editor, false);
}
}
void CompletionSupport::autoComplete(ITextEditable *editor, bool forced)
{
autoComplete_helper(editor, forced, /*quickFix = */ false);
}
void CompletionSupport::quickFix(ITextEditable *editor)
{
autoComplete_helper(editor,
/*forced = */ true,
/*quickFix = */ true);
}
void CompletionSupport::autoComplete_helper(ITextEditable *editor, bool forced,
bool quickFix)
{
m_completionCollector = 0;
foreach (ICompletionCollector *collector, m_completionCollectors) {
if (quickFix)
collector = qobject_cast<IQuickFixCollector *>(collector);
if (collector && collector->supportsEditor(editor)) {
m_completionCollector = collector;
break;
}
}
if (!m_completionCollector)
return;
m_editor = editor;
QList<CompletionItem> completionItems;
if (!m_completionList) {
if (!forced && !m_completionCollector->triggersCompletion(editor))
return;
m_startPosition = m_completionCollector->startCompletion(editor);
completionItems = getCompletions();
QTC_ASSERT(m_startPosition != -1 || completionItems.size() == 0, return);
if (completionItems.isEmpty()) {
cleanupCompletions();
return;
}
m_completionList = new CompletionWidget(this, editor);
m_completionList->setQuickFix(quickFix);
connect(m_completionList, SIGNAL(itemSelected(TextEditor::CompletionItem)),
this, SLOT(performCompletion(TextEditor::CompletionItem)));
connect(m_completionList, SIGNAL(completionListClosed()),
this, SLOT(cleanupCompletions()));
// Make sure to clean up the completions if the list is destroyed without
// emitting completionListClosed (can happen when no focus out event is received,
// for example when switching applications on the Mac)
connect(m_completionList, SIGNAL(destroyed(QObject*)),
this, SLOT(cleanupCompletions()));
} else {
completionItems = getCompletions();
if (completionItems.isEmpty()) {
m_completionList->closeList();
return;
}
}
m_completionList->setCompletionItems(completionItems);
// Partially complete when completion was forced
if (forced && m_completionCollector->partiallyComplete(completionItems)) {
m_checkCompletionTrigger = true;
m_completionList->closeList();
} else {
m_completionList->showCompletions(m_startPosition);
}
}
static bool compareChar(const QChar &l, const QChar &r)
{
if (l == QLatin1Char('_'))
return false;
else if (r == QLatin1Char('_'))
return true;
else
return l < r;
}
static bool lessThan(const QString &l, const QString &r)
{
return std::lexicographical_compare(l.begin(), l.end(),
r.begin(), r.end(),
compareChar);
}
static bool completionItemLessThan(const CompletionItem &i1, const CompletionItem &i2)
{
// The order is case-insensitive in principle, but case-sensitive when this would otherwise mean equality
const QString lower1 = i1.m_text.toLower();
const QString lower2 = i2.m_text.toLower();
if (lower1 == lower2)
return lessThan(i1.m_text, i2.m_text);
else
return lessThan(lower1, lower2);
}
QList<CompletionItem> CompletionSupport::getCompletions() const
{
QList<CompletionItem> completionItems;
m_completionCollector->completions(&completionItems);
qStableSort(completionItems.begin(), completionItems.end(), completionItemLessThan);
// Remove duplicates
QString lastKey;
QList<CompletionItem> uniquelist;
foreach (const CompletionItem &item, completionItems) {
if (item.m_text != lastKey) {
uniquelist.append(item);
lastKey = item.m_text;
} else {
uniquelist.last().m_duplicateCount++;
}
}
return uniquelist;
}
|