Initial import

src/plugins/snippets/snippetscompletion.cpp

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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#include "snippetscompletion.h"
+
+#include "snippetswindow.h"
+#include "snippetspec.h"
+#include "snippetsplugin.h"
+
+#include <texteditor/itexteditable.h>
+
+#include <QtCore/QDebug>
+#include <QtCore/QMap>
+#include <QtGui/QAction>
+#include <QtGui/QKeyEvent>
+
+using namespace Snippets::Internal;
+
+const QIcon SnippetsCompletion::m_fileIcon = QIcon(":/snippets/images/file.png");
+
+SnippetsCompletion::SnippetsCompletion(QObject *parent)
+    : ICompletionCollector(parent)
+{
+    m_core = SnippetsPlugin::core();
+    m_snippetsWnd = SnippetsPlugin::snippetsWindow();
+
+    updateCompletions();
+}
+
+SnippetsCompletion::~SnippetsCompletion()
+{
+    qDeleteAll(m_autoCompletions.values());
+    m_autoCompletions.clear();
+}
+
+void SnippetsCompletion::updateCompletions()
+{
+    qDeleteAll(m_autoCompletions.values());
+    m_autoCompletions.clear();
+
+    int index = 0;
+    foreach (SnippetSpec *spec, m_snippetsWnd->snippets()) {
+        if (!spec->completionShortcut().isEmpty()) {
+            TextEditor::CompletionItem *item = new TextEditor::CompletionItem;
+            item->m_key = spec->name();
+            item->m_collector = this;
+            item->m_index = index;
+            item->m_relevance = 0;
+            m_autoCompletions.insert(spec->completionShortcut(), item);
+            ++index;
+        }
+    }
+}
+
+bool SnippetsCompletion::triggersCompletion(TextEditor::ITextEditable *editor)
+{
+    QString currentWord = editor->textAt(editor->position() - 3, 3);
+    currentWord = currentWord.trimmed();
+    return currentWord.length() == 2 && m_autoCompletions.contains(currentWord) &&
+            !editor->characterAt(editor->position() - 1).isSpace();
+}
+
+int SnippetsCompletion::startCompletion(TextEditor::ITextEditable *editor)
+{
+    m_editor = editor;
+    m_startPosition = findStartOfName(m_editor);
+    return m_startPosition;
+}
+
+void SnippetsCompletion::completions(QList<TextEditor::CompletionItem *> *completions)
+{
+    const int length = m_editor->position() - m_startPosition;
+    if (length >= 2) {
+        QString key = m_editor->textAt(m_startPosition, length);
+        foreach (TextEditor::CompletionItem* item, m_autoCompletions.values()) {
+            if (item->m_key.startsWith(key, Qt::CaseInsensitive)) {
+                (*completions) << item;
+            }
+        }
+    }
+}
+
+QString SnippetsCompletion::text(TextEditor::CompletionItem *item) const
+{
+    const SnippetSpec *spec = m_snippetsWnd->snippets().at(item->m_index);
+    return spec->name();
+}
+
+QString SnippetsCompletion::details(TextEditor::CompletionItem *item) const
+{
+    const SnippetSpec *spec = m_snippetsWnd->snippets().at(item->m_index);
+    return spec->description();
+}
+
+QIcon SnippetsCompletion::icon(TextEditor::CompletionItem *) const
+{
+    return m_fileIcon;
+}
+
+void SnippetsCompletion::complete(TextEditor::CompletionItem *item)
+{
+    SnippetSpec *spec = m_snippetsWnd->snippets().at(item->m_index);
+
+    int length = m_editor->position() - m_startPosition;
+    m_editor->setCurPos(m_startPosition);
+    m_editor->remove(length);
+
+    m_snippetsWnd->insertSnippet(m_editor, spec);
+}
+
+bool SnippetsCompletion::partiallyComplete()
+{
+    return false;
+}
+
+void SnippetsCompletion::cleanup()
+{
+}
+
+int SnippetsCompletion::findStartOfName(const TextEditor::ITextEditor *editor)
+{
+    int pos = editor->position() - 1;
+    QChar chr = editor->characterAt(pos);
+
+    // Skip to the start of a name
+    while (!chr.isSpace() && !chr.isNull())
+        chr = editor->characterAt(--pos);
+
+    return pos + 1;
+}