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/***************************************************************************
 *
 * Copyright (C) 2005 Elad Lahav (elad_lahav@users.sourceforge.net)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ***************************************************************************/

#include <ntqcheckbox.h>
#include <ntqtextedit.h>
#include <kurlrequester.h>
#include <klineedit.h>
#include <kstandarddirs.h>
#include <klocale.h>
#include "preffrontend.h"
#include "kscopeconfig.h"
#include "configfrontend.h"

/**
 * Class constructor.
 * @param	pParent	The parent widget
 * @param	szName	The widget's name
 */
PrefFrontend::PrefFrontend(TQWidget* pParent, const char* szName) :
	PrefFrontendLayout(pParent, szName)
{
	// Set initial values
	load();

	// Attempt to guess paths based on the user's PATH environment variable
	connect(m_pGuessButton, SIGNAL(clicked()), this,
		SLOT(slotGuessPaths()));	
		
	// Emit the modified() signal when a new path is set
	connect(m_pCscopeURL, SIGNAL(textChanged(const TQString&)), this,
		SIGNAL(modified()));
	connect(m_pCtagsURL, SIGNAL(textChanged(const TQString&)), this,
		SIGNAL(modified()));
	connect(m_pDotURL, SIGNAL(textChanged(const TQString&)), this,
		SIGNAL(modified()));
}

/**
 * Class destructor.
 */
PrefFrontend::~PrefFrontend()
{
}

/**
 * Reads the current settings from the configuration object, and applies them
 * the the page's widget.
 */
void PrefFrontend::load()
{
	m_pCscopeURL->lineEdit()->setText(Config().getCscopePath());
	m_pCtagsURL->lineEdit()->setText(Config().getCtagsPath());
	m_pDotURL->lineEdit()->setText(Config().getDotPath());
}

/**
 * Commits settings changes to the configuration object.
 */
void PrefFrontend::apply()
{
	Config().setCscopePath(m_pCscopeURL->url());
	Config().setCtagsPath(m_pCtagsURL->url());
	Config().setDotPath(m_pDotURL->url());
}

/**
 * Emits the modified() signal whenever any of the paths edit widgets changes
 * its contents.
 * This slot is connected to the textChanged() signal of each of the path
 * edit widgets. By emitting the modified() signal, the widget notifies the
 * parent dialog it should enable the "Apply" button.
 */
void PrefFrontend::slotChanged(const TQString&)
{
	emit modified();
}

/**
 * Checks the user's PATH environment variable for a Cscope and Ctags
 * executables.
 * This is done by running the kscope_config script.
 */
void PrefFrontend::slotGuessPaths()
{
	ConfigFrontend* pConf;
	
	// Start with an empty results text widget
	m_pScriptText->clear();
	
	// Create a frontend object for the script
	pConf = new ConfigFrontend(true);
	
	// Show tests and results in the text widget
	connect(pConf, SIGNAL(test(uint)), this,
		SLOT(slotAutoConfigTest(uint)));
	connect(pConf, SIGNAL(result(uint, const TQString&)), this,
		SLOT(slotAutoConfigResult(uint, const TQString&)));
	
	// Run the script
	pConf->run(m_pCscopeURL->url(), m_pCtagsURL->url(),
		m_pDotURL->url());
}

/**
 * Shows the test being executed by the script in the text widget.
 * This slot is connected to the test() signal of the ConfigFrontend object.
 * @param	nType	The type of test being executed
 */
void PrefFrontend::slotAutoConfigTest(uint nType)
{
	switch (nType) {
	case ConfigFrontend::CscopePath:
		m_pScriptText->insert(i18n("Looking for Cscope..."));
		break;
		
	case ConfigFrontend::CscopeVersion:
		m_pScriptText->insert(i18n("Checking Cscope version..."));
		break;
		
	case ConfigFrontend::CscopeVerbose:
		m_pScriptText->insert(i18n("Cscope support for line mode verbose "
			"output..."));
		break;
		
	case ConfigFrontend::CscopeSlowPath:
		m_pScriptText->insert(i18n("Cscope support slow path definitions... "));
		break;
			
	case ConfigFrontend::CtagsPath:
		m_pScriptText->insert(i18n("Looking for Ctags..."));
		break;
					
	case ConfigFrontend::CtagsExub:
		m_pScriptText->insert(i18n("Ctags compatibilty with ctags-exuberant"
			"..."));
		break;
			
	case ConfigFrontend::DotPath:
		m_pScriptText->insert(i18n("Looking for Dot..."));
		break;
					
	case ConfigFrontend::DotPlain:
		m_pScriptText->insert(i18n("Checking -Tplain..."));
		break;
	}
}

/**
 * Shows the result of a test executed by the configuration script, and
 * adjusts the configuration widgets accordingly.
 * @param	nType	The type of test that was executed
 * @param	sResult	The test's result
 */
void PrefFrontend::slotAutoConfigResult(uint nType, const TQString& sResult)
{
	TQString sLine;
	
	sLine = sResult + "\n";
		
	switch (nType) {
	case ConfigFrontend::CscopePath:
		m_pScriptText->insert(sLine);
		if (sResult == "ERROR")
			m_pCscopeURL->lineEdit()->setText("");
		else
			m_pCscopeURL->lineEdit()->setText(sResult);
			
		break;
	
	case ConfigFrontend::CscopeVersion:
		m_pScriptText->insert(sLine);
		if (sResult == "ERROR")
			m_pCscopeURL->lineEdit()->setText("");
		break;
	
	case ConfigFrontend::CscopeVerbose:
		m_pScriptText->insert(sLine);
		break;
	
	case ConfigFrontend::CscopeSlowPath:
		m_pScriptText->insert(sLine);
		break;
		
	case ConfigFrontend::CtagsPath:
		m_pScriptText->insert(sLine);
		if (sResult == "ERROR")
			m_pCtagsURL->lineEdit()->setText("");
		else
			m_pCtagsURL->lineEdit()->setText(sResult);
		break;
	
	case ConfigFrontend::CtagsExub:
		m_pScriptText->insert(sLine);
		if (sResult == "ERROR")
			m_pCtagsURL->lineEdit()->setText("");
		break;
	
	case ConfigFrontend::DotPath:
		m_pScriptText->insert(sLine);
		if (sResult == "ERROR")
			m_pDotURL->lineEdit()->setText("");
		else
			m_pDotURL->lineEdit()->setText(sResult);
		break;
	
	case ConfigFrontend::DotPlain:
		m_pScriptText->insert(sLine);
		if (sResult == "ERROR")
			m_pDotURL->lineEdit()->setText("");
		break;
	}
}

#include "preffrontend.moc"