Backup basic settings as XML

This patch enables XML backup. We can now save the settings
to an XML file. Currently this backs up just the basic stuff
such as custom text, language and brightness.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Signed-off-by: Thiago Macieira <thiago@macieira.org>

5 files changed, 90 insertions, 11 deletions

diff --git a/qt-ui/configuredivecomputer.cpp b/qt-ui/configuredivecomputer.cpp
index ad431eefe..0d602c8e8 100644
--- a/qt-ui/configuredivecomputer.cpp
+++ b/qt-ui/configuredivecomputer.cpp
@@ -1,6 +1,8 @@
 #include "configuredivecomputer.h"
 #include "libdivecomputer/hw.h"
 #include <QDebug>
+#include <QFile>
+
 ConfigureDiveComputer::ConfigureDiveComputer(QObject *parent) :
 	QObject(parent),
 	readThread(0),
@@ -42,6 +44,36 @@ void ConfigureDiveComputer::saveDeviceDetails(DeviceDetails *details, device_dat
 	writeThread->start();
 }
 
+bool ConfigureDiveComputer::saveXMLBackup(QString fileName, DeviceDetails *details, device_data_t *data, QString errorText)
+{
+	QString xml = "";
+	QString vendor = data->vendor;
+	QString product = data->product;
+	xml += "<backup>";
+	xml += "\n<divecomputer vendor='" + vendor
+			+ "' model = '" + product + "'"
+			+ " />";
+	xml += "\n<settings>";
+	xml += "\n<setting name='CustomText' value = '" + details->customText() + "' />";
+	xml += "\n<setting name='Brightness' value = '" + QString::number(details->brightness()) + "' />";
+	xml += "\n<setting name='Language' value = '" + QString::number(details->language()) + "' />";
+	xml += "\n<setting name='DateFormat' value = '" + QString::number(details->dateFormat()) + "' />";
+	xml += "\n</settings>";
+	xml += "\n</backup>";
+	QFile file(fileName);
+	if (!file.open(QIODevice::WriteOnly)) {
+		errorText = tr("Could not save the backup file %1. Error Message: %2")
+				.arg(fileName, file.errorString());
+		return false;
+	}
+	//file open successful. write data and save.
+	QTextStream out(&file);
+	out << xml;
+
+	file.close();
+	return true;
+}
+
 void ConfigureDiveComputer::setState(ConfigureDiveComputer::states newState)
 {
 	currentState = newState;
diff --git a/qt-ui/configuredivecomputer.h b/qt-ui/configuredivecomputer.h
index f21f02910..ca072e148 100644
--- a/qt-ui/configuredivecomputer.h
+++ b/qt-ui/configuredivecomputer.h
@@ -30,7 +30,7 @@ public:
 	device_data_t *m_data;
 	void saveDeviceDetails(DeviceDetails *details, device_data_t *data);
 	void fetchDeviceDetails();
-
+	bool saveXMLBackup(QString fileName, DeviceDetails *details, device_data_t *data, QString errorText);
 signals:
 	void message(QString msg);
 	void error(QString err);
diff --git a/qt-ui/configuredivecomputerdialog.cpp b/qt-ui/configuredivecomputerdialog.cpp
index 973243af7..71960b6f2 100644
--- a/qt-ui/configuredivecomputerdialog.cpp
+++ b/qt-ui/configuredivecomputerdialog.cpp
@@ -7,9 +7,8 @@
 #include "../display.h"
 #include "../divelist.h"
 #include "configuredivecomputer.h"
-#include <QInputDialog>
-#include <QDebug>
-
+#include <QFileDialog>
+#include <QMessageBox>
 struct product {
 	const char *product;
 	dc_descriptor_t *descriptor;
@@ -126,6 +125,15 @@ void ConfigureDiveComputerDialog::fill_device_list(int dc_type)
 		ui->device->setCurrentIndex(deviceIndex);
 }
 
+void ConfigureDiveComputerDialog::populateDeviceDetails()
+{
+	deviceDetails->setBrightness(ui->brightnessComboBox->currentIndex());
+	deviceDetails->setLanguage(ui->languageComboBox->currentIndex());
+	deviceDetails->setDateFormat(ui->dateFormatComboBox->currentIndex());
+	deviceDetails->setCustomText(ui->customTextLlineEdit->text());
+	deviceDetails->setSyncTime(ui->dateTimeSyncCheckBox->isChecked());
+}
+
 void ConfigureDiveComputerDialog::on_vendor_currentIndexChanged(const QString &vendor)
 {
 	int dcType = DC_TYPE_SERIAL;
@@ -200,11 +208,7 @@ void ConfigureDiveComputerDialog::deviceReadFinished()
 
 void ConfigureDiveComputerDialog::on_saveSettingsPushButton_clicked()
 {
-	deviceDetails->setBrightness(ui->brightnessComboBox->currentIndex());
-	deviceDetails->setLanguage(ui->languageComboBox->currentIndex());
-	deviceDetails->setDateFormat(ui->dateFormatComboBox->currentIndex());
-	deviceDetails->setCustomText(ui->customTextLlineEdit->text());
-	deviceDetails->setSyncTime(ui->dateTimeSyncCheckBox->isChecked());
+	populateDeviceDetails();
 	getDeviceData();
 	config->saveDeviceDetails(deviceDetails, &device_data);
 }
@@ -225,3 +229,29 @@ void ConfigureDiveComputerDialog::reloadValues()
 	ui->dateFormatComboBox->setCurrentIndex(deviceDetails->dateFormat());
 }
 
+
+void ConfigureDiveComputerDialog::on_backupButton_clicked()
+{
+	QString filename = existing_filename ?: prefs.default_filename;
+	QFileInfo fi(filename);
+	filename = fi.absolutePath().append(QDir::separator()).append("Backup.xml");
+	QString backupPath = QFileDialog::getSaveFileName(this, tr("Backup Dive Computer Settings"),
+							filename, tr("Backup files (*.xml)")
+							);
+	if (!backupPath.isEmpty()) {
+		populateDeviceDetails();
+		getDeviceData();
+		QString errorText = "";
+		if (!config->saveXMLBackup(backupPath, deviceDetails, &device_data, errorText)) {
+			QMessageBox::critical(this, tr("XML Backup Error"),
+					      tr("An eror occurred while saving the backup file.\n%1")
+					      .arg(errorText)
+					      );
+		} else {
+			QMessageBox::information(this, tr("Backup succeeded"),
+						 tr("Your settings have been saved to: %1")
+						 .arg(filename)
+						 );
+		}
+	}
+}
diff --git a/qt-ui/configuredivecomputerdialog.h b/qt-ui/configuredivecomputerdialog.h
index e8c941fcf..7312deec7 100644
--- a/qt-ui/configuredivecomputerdialog.h
+++ b/qt-ui/configuredivecomputerdialog.h
@@ -31,6 +31,8 @@ private slots:
 	void on_saveSettingsPushButton_clicked();
 	void deviceDetailsReceived(DeviceDetails *newDeviceDetails);
 	void reloadValues();
+	void on_backupButton_clicked();
+
 private:
 	Ui::ConfigureDiveComputerDialog *ui;
 
@@ -48,6 +50,7 @@ private:
 	void fill_device_list(int dc_type);
 
 	DeviceDetails *deviceDetails;
+	void populateDeviceDetails();
 };
 
 #endif // CONFIGUREDIVECOMPUTERDIALOG_H
diff --git a/qt-ui/configuredivecomputerdialog.ui b/qt-ui/configuredivecomputerdialog.ui
index 580f86159..4fb731a3c 100644
--- a/qt-ui/configuredivecomputerdialog.ui
+++ b/qt-ui/configuredivecomputerdialog.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>364</width>
-    <height>416</height>
+    <width>472</width>
+    <height>472</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -89,6 +89,20 @@
        </property>
       </spacer>
      </item>
+     <item>
+      <widget class="QPushButton" name="backupButton">
+       <property name="text">
+        <string>Backup</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="restoreBackupButton">
+       <property name="text">
+        <string>Restore Backup</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>