MessageTopicComboBox.cpp
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00001 /******************************************************************************
00002  * Copyright (C) 2015 by Ralf Kaestner                                        *
00003  * ralf.kaestner@gmail.com                                                    *
00004  *                                                                            *
00005  * This program is free software; you can redistribute it and/or modify       *
00006  * it under the terms of the Lesser GNU General Public License as published by*
00007  * the Free Software Foundation; either version 3 of the License, or          *
00008  * (at your option) any later version.                                        *
00009  *                                                                            *
00010  * This program is distributed in the hope that it will be useful,            *
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the               *
00013  * Lesser GNU General Public License for more details.                        *
00014  *                                                                            *
00015  * You should have received a copy of the Lesser GNU General Public License   *
00016  * along with this program. If not, see <http://www.gnu.org/licenses/>.       *
00017  ******************************************************************************/
00018 
00019 #include <QAbstractItemView>
00020 #include <QKeyEvent>
00021 #include <QLineEdit>
00022 
00023 #include "rqt_multiplot/MessageTopicComboBox.h"
00024 
00025 namespace rqt_multiplot {
00026 
00027 /*****************************************************************************/
00028 /* Constructors and Destructor                                               */
00029 /*****************************************************************************/
00030 
00031 MessageTopicComboBox::MessageTopicComboBox(QWidget* parent) :
00032   MatchFilterComboBox(parent),
00033   registry_(new MessageTopicRegistry(this)),
00034   isUpdating_(false) {
00035   connect(registry_, SIGNAL(updateStarted()), this,
00036     SLOT(registryUpdateStarted()));
00037   connect(registry_, SIGNAL(updateFinished()), this,
00038     SLOT(registryUpdateFinished()));
00039   
00040   connect(this, SIGNAL(currentIndexChanged(const QString&)), this,
00041     SLOT(currentIndexChanged(const QString&)));
00042   
00043   if (registry_->isUpdating())
00044     registryUpdateStarted();
00045   else if (!registry_->isEmpty())
00046     registryUpdateFinished();
00047   else
00048     registry_->update();
00049 }
00050 
00051 MessageTopicComboBox::~MessageTopicComboBox() {
00052 }
00053 
00054 /*****************************************************************************/
00055 /* Accessors                                                                 */
00056 /*****************************************************************************/
00057 
00058 void MessageTopicComboBox::setEditable(bool editable) {
00059   if (editable != QComboBox::isEditable()) {
00060     MatchFilterComboBox::setEditable(editable);
00061     
00062     if (lineEdit()) {
00063       blockSignals(true);
00064   
00065       int index = findText(currentTopic_);
00066       
00067       if (index < 0)
00068         setEditText(currentTopic_);
00069       else
00070         setCurrentIndex(index);
00071       
00072       blockSignals(false);
00073       
00074       connect(lineEdit(), SIGNAL(editingFinished()), this,
00075         SLOT(lineEditEditingFinished()));
00076     }
00077   }
00078 }
00079 
00080 void MessageTopicComboBox::setCurrentTopic(const QString& topic) {
00081   if (topic != currentTopic_) {
00082     currentTopic_ = topic;
00083     
00084     int index = findText(topic);
00085     
00086     if (index < 0)
00087       setEditText(topic);
00088     else
00089       setCurrentIndex(index);
00090     
00091     emit currentTopicChanged(topic);
00092   }
00093 }
00094 
00095 QString MessageTopicComboBox::getCurrentTopic() const {
00096   return currentTopic_;
00097 }
00098 
00099 QString MessageTopicComboBox::getCurrentTopicType() const {
00100   int index = findText(currentTopic_);
00101   
00102   if (index >= 0)
00103     return itemData(index).toString();
00104   else
00105     return QString();
00106 }
00107 
00108 bool MessageTopicComboBox::isUpdating() const {
00109   return isUpdating_;
00110 }
00111 
00112 bool MessageTopicComboBox::isCurrentTopicRegistered() const {
00113   return (findText(currentTopic_) >= 0);
00114 }
00115 
00116 /*****************************************************************************/
00117 /* Methods                                                                   */
00118 /*****************************************************************************/
00119 
00120 void MessageTopicComboBox::updateTopics() {
00121   registry_->update();
00122 }
00123 
00124 /*****************************************************************************/
00125 /* Slots                                                                     */
00126 /*****************************************************************************/
00127 
00128 void MessageTopicComboBox::registryUpdateStarted() {
00129   setEnabled(false);
00130   
00131   isUpdating_ = true;
00132   emit updateStarted();
00133   
00134   clear();
00135 }
00136 
00137 void MessageTopicComboBox::registryUpdateFinished() {
00138   QMap<QString, QString> topics = registry_->getTopics();
00139   
00140   blockSignals(true);
00141   
00142   for (QMap<QString, QString>::const_iterator it = topics.begin();
00143       it != topics.end(); ++it)
00144     addItem(it.key(), it.value());
00145   
00146   int index = findText(currentTopic_);
00147   
00148   if (index < 0)
00149     setEditText(currentTopic_);
00150   else
00151     setCurrentIndex(index);
00152   
00153   blockSignals(false);
00154   
00155   isUpdating_ = false;
00156   emit updateFinished();
00157   
00158   setEnabled(true);
00159 }
00160 
00161 void MessageTopicComboBox::currentIndexChanged(const QString& text) {
00162   if (currentIndex() >= 0)
00163     setCurrentTopic(text);
00164 }
00165 
00166 void MessageTopicComboBox::lineEditEditingFinished() {
00167   setCurrentTopic(currentText());
00168 }
00169 
00170 }


rqt_multiplot
Author(s): Ralf Kaestner
autogenerated on Tue May 9 2017 02:16:02