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/**
* Changes:
* 12-4-07, Mark Larkin, Removed destructor. No need to delete QObjects. Also removed
* setAllPtrsToNull function.
*
* 24-05-07,Nigel Brown(EMBL): simplified file searching mechanism; removed
* filePath, executablePath members; made helpFileName static; removed
* executablePath argument to constructor. Added Resources class to handle
* file search.
*
* 06-06-07,Nigel Brown(EMBL): loadHelpInformation() now returns 'string *'
* instead of 'void'; constructor tests this value to see if a help string was
* successfully loaded then typesets it as HTML and scrolls to the top.
*/
#include "HelpDisplayWidget.h"
#include <QTextEdit>
#include <iostream>
#include <fstream>
#include <QtGui>
#include "Resources.h"
const string HelpDisplayWidget::helpFileName = "/usr/share/clustalx/clustalx.hlp";
HelpDisplayWidget::HelpDisplayWidget(char helpPointer)
{
setWindowTitle("Help");
helpText = new QTextEdit;
helpText->setReadOnly(true);
helpText->setMinimumWidth(500);
helpText->setMinimumHeight(400);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
mainLayout = new QVBoxLayout;
okButton = new QPushButton(tr("Ok"));
okButton->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Minimum);
connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));
mainLayout->addWidget(helpText);
mainLayout->addWidget(okButton);
setLayout(mainLayout);
/* nige */
string *buff = loadHelpInformation(helpPointer);
if (buff) {
//cout << buff->c_str() << endl;
helpText->setHtml(QString(buff->c_str()));
//nige: scroll to top of text
QTextCursor tc = helpText->textCursor();
tc.movePosition(QTextCursor::Start);
helpText->setTextCursor(tc);
delete buff;
}
}
string *HelpDisplayWidget::loadHelpInformation(char helpPointer)
{
ifstream helpFile;
int i, number, nlines;
bool foundHelp;
char templine[MAXLINE + 1]; // To be used with get!
char token = '\0';
string digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string helpMarker = ">>HELP";
Resources *res = Resources::Instance();
string file = res->searchPathsForFile(helpFileName);
//cout << "helpfile: " << file.c_str() << endl;
//nige
string *buff = new string("<BODY>");
try
{
helpFile.open(file.c_str(), ifstream::in);
if(!helpFile.is_open())
{
clustalw::utilityObject->error("Cannot open File file [%s]\n",
helpFileName.c_str());
return 0;
}
nlines = 0;
number = -1;
foundHelp = false;
string tempS;
while(!helpFile.eof())
{
if(!helpFile.getline(templine, MAXLINE + 1))
{
if(!foundHelp)
{
clustalw::utilityObject->error("No help found in help file\n");
}
helpFile.close();
return 0;
}
tempS = string(templine);
if(tempS.find(helpMarker, 0) != string::npos) // If found helpMarker!
{
token = ' ';
for(i = helpMarker.length(); i < 8; i++) // MAGIC 8??????
{
if(digits.find(tempS[i], 0) != string::npos)
{
token = tempS[i];
break;
}
}
}
if(token == helpPointer)
{
foundHelp = true;
while(helpFile.getline(templine, MAXLINE + 1))
{
tempS = string(templine);
if(tempS.find(helpMarker, 0) != string::npos) // If found another help
{
//nige: section terminated by next section anchor
helpFile.close();
*buff += "</BODY>\n";
return buff;
}
//replace trailing newline on non-html
if (tempS[0] != '<') {
tempS += '\n';
}
//cout << tempS.c_str() << endl;
*buff += tempS;
++nlines;
}
//nige: last section terminated by EOF
helpFile.close();
*buff += "</BODY>\n";
return buff;
}
}
}
catch(ifstream::failure e)
{
return 0;
}
if(helpFile.is_open())
{
helpFile.close();
}
return 0;
}
void HelpDisplayWidget::accept()
{
setResult(QDialog::Accepted);
hide();
}
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