forked from osmocom/wireshark
257 lines
7.3 KiB
C++
257 lines
7.3 KiB
C++
/* field_filter_edit.cpp
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/dfilter/dfilter.h>
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#include <filter_files.h>
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#include <wsutil/utf8_entities.h>
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#include "field_filter_edit.h"
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#include "filter_dialog.h"
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#include "stock_icon_tool_button.h"
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#include "syntax_line_edit.h"
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#include <QAction>
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#include <QAbstractItemView>
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#include <QComboBox>
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#include <QCompleter>
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#include <QEvent>
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#include <QMenu>
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#include <QMessageBox>
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#include <QPainter>
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#include <QStringListModel>
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#include <wsutil/utf8_entities.h>
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// To do:
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// - Get rid of shortcuts and replace them with "n most recently applied filters"?
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// - We need simplified (button- and dropdown-free) versions for use in dialogs and field-only checking.
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// - Add a separator or otherwise distinguish between recent items and fields
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// in the completion dropdown.
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#ifdef __APPLE__
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#define DEFAULT_MODIFIER UTF8_PLACE_OF_INTEREST_SIGN
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#else
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#define DEFAULT_MODIFIER "Ctrl-"
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#endif
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// proto.c:fld_abbrev_chars
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static const QString fld_abbrev_chars_ = "-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";
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FieldFilterEdit::FieldFilterEdit(QWidget *parent) :
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SyntaxLineEdit(parent),
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save_action_(NULL),
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remove_action_(NULL)
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{
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setAccessibleName(tr("Display filter entry"));
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completion_model_ = new QStringListModel(this);
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setCompleter(new QCompleter(completion_model_, this));
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setCompletionTokenChars(fld_abbrev_chars_);
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setDefaultPlaceholderText();
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// DFCombo
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// Bookmark
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// DisplayFilterEdit
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// Clear button
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// Apply (right arrow)
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// Combo drop-down
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connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(checkFilter(const QString&)));
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// connect(this, SIGNAL(returnPressed()), this, SLOT(applyDisplayFilter()));
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}
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void FieldFilterEdit::setDefaultPlaceholderText()
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{
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placeholder_text_ = QString(tr("Enter a field %1")).arg(UTF8_HORIZONTAL_ELLIPSIS);
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setPlaceholderText(placeholder_text_);
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}
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void FieldFilterEdit::focusOutEvent(QFocusEvent *event)
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{
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if (syntaxState() == Valid)
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emit popFilterSyntaxStatus();
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SyntaxLineEdit::focusOutEvent(event);
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}
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bool FieldFilterEdit::checkFilter()
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{
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checkFilter(text());
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return syntaxState() != Invalid;
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}
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void FieldFilterEdit::checkFilter(const QString& filter_text)
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{
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popFilterSyntaxStatus();
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checkDisplayFilter(filter_text);
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switch (syntaxState()) {
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case Deprecated:
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{
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emit pushFilterSyntaxWarning(syntaxErrorMessage());
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break;
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}
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case Invalid:
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{
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QString invalidMsg(tr("Invalid filter: "));
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invalidMsg.append(syntaxErrorMessage());
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emit pushFilterSyntaxStatus(invalidMsg);
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break;
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}
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default:
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break;
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}
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}
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// GTK+ behavior:
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// - Operates on words (proto.c:fld_abbrev_chars).
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// - Popup appears when you enter or remove text.
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// Our behavior:
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// - Operates on words (fld_abbrev_chars_).
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// - Popup appears when you enter or remove text.
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// - Popup appears when you move the cursor.
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// - Popup does not appear when text is selected.
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// - Recent and saved display filters in popup when editing first word.
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// ui/gtk/filter_autocomplete.c:build_autocompletion_list
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void FieldFilterEdit::buildCompletionList(const QString &field_word)
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{
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// Push a hint about the current field.
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if (syntaxState() == Valid) {
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emit popFilterSyntaxStatus();
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header_field_info *hfinfo = proto_registrar_get_byname(field_word.toUtf8().constData());
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if (hfinfo) {
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QString cursor_field_msg = QString("%1: %2")
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.arg(hfinfo->name)
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.arg(ftype_pretty_name(hfinfo->type));
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emit pushFilterSyntaxStatus(cursor_field_msg);
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}
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}
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if (field_word.length() < 1) {
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completion_model_->setStringList(QStringList());
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return;
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}
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void *proto_cookie;
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QStringList field_list;
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int field_dots = field_word.count('.'); // Some protocol names (_ws.expert) contain periods.
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for (int proto_id = proto_get_first_protocol(&proto_cookie); proto_id != -1; proto_id = proto_get_next_protocol(&proto_cookie)) {
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protocol_t *protocol = find_protocol_by_id(proto_id);
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if (!proto_is_protocol_enabled(protocol)) continue;
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// Don't complete the current word.
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const QString pfname = proto_get_protocol_filter_name(proto_id);
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if (field_word.compare(pfname)) field_list << pfname;
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// Add fields only if we're past the protocol name and only for the
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// current protocol.
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if (field_dots > pfname.count('.')) {
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void *field_cookie;
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const QByteArray fw_ba = field_word.toUtf8(); // or toLatin1 or toStdString?
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const char *fw_utf8 = fw_ba.constData();
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gsize fw_len = (gsize) strlen(fw_utf8);
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for (header_field_info *hfinfo = proto_get_first_protocol_field(proto_id, &field_cookie); hfinfo; hfinfo = proto_get_next_protocol_field(proto_id, &field_cookie)) {
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if (hfinfo->same_name_prev_id != -1) continue; // Ignore duplicate names.
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if (!g_ascii_strncasecmp(fw_utf8, hfinfo->abbrev, fw_len)) {
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if ((gsize) strlen(hfinfo->abbrev) != fw_len) field_list << hfinfo->abbrev;
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}
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}
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}
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}
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field_list.sort();
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completion_model_->setStringList(field_list);
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completer()->setCompletionPrefix(field_word);
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}
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void FieldFilterEdit::clearFilter()
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{
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clear();
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QString new_filter;
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emit filterPackets(new_filter, true);
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}
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void FieldFilterEdit::applyDisplayFilter()
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{
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if (syntaxState() == Invalid) {
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return;
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}
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QString new_filter = text();
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emit filterPackets(new_filter, true);
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}
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void FieldFilterEdit::changeEvent(QEvent* event)
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{
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if (0 != event)
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{
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switch (event->type())
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{
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case QEvent::LanguageChange:
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setDefaultPlaceholderText();
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break;
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default:
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break;
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}
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}
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SyntaxLineEdit::changeEvent(event);
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}
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void FieldFilterEdit::showFilters()
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{
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FilterDialog display_filter_dlg(window(), FilterDialog::DisplayFilter);
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display_filter_dlg.exec();
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}
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void FieldFilterEdit::prepareFilter()
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{
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QAction *pa = qobject_cast<QAction*>(sender());
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if (!pa || pa->data().toString().isEmpty()) return;
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setText(pa->data().toString());
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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