You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
280 lines
13 KiB
280 lines
13 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/xml/outliner/outliner.doc:5 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>Outliner to show use of DOM</title>
|
|
<style type="text/css"><!--
|
|
fn { margin-left: 1cm; text-indent: -1cm; }
|
|
a:link { color: #004faf; text-decoration: none }
|
|
a:visited { color: #672967; text-decoration: none }
|
|
body { background: #ffffff; color: black; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr bgcolor="#E5E5E5">
|
|
<td valign=center>
|
|
<a href="index.html">
|
|
<font color="#004faf">Home</font></a>
|
|
| <a href="classes.html">
|
|
<font color="#004faf">All Classes</font></a>
|
|
| <a href="mainclasses.html">
|
|
<font color="#004faf">Main Classes</font></a>
|
|
| <a href="annotated.html">
|
|
<font color="#004faf">Annotated</font></a>
|
|
| <a href="groups.html">
|
|
<font color="#004faf">Grouped Classes</font></a>
|
|
| <a href="functions.html">
|
|
<font color="#004faf">Functions</font></a>
|
|
</td>
|
|
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Outliner to show use of DOM</h1>
|
|
|
|
|
|
<p>
|
|
<p> This example presents a small outliner program to show the basic usage of
|
|
the <a href="xml.html#dom">DOM classes</a>. The format of the outlines
|
|
is the OPML format as described in http://www.opml.org/spec.
|
|
<p> This example shows how to load a DOM tree from an XML file and how to
|
|
traverse it.
|
|
<p> <hr>
|
|
<p> Sample XML file (todos.opml):
|
|
<p> <pre><?xml version="1.0" encoding="ISO-8859-1"?>
|
|
<opml version="1.0">
|
|
<head>
|
|
<title>Todo List</title>
|
|
<dateCreated>Tue, 31 Oct 2000 17:00:17 CET</dateCreated>
|
|
<dateModified>Tue, 31 Oct 2000 17:00:17 CET</dateModified>
|
|
<ownerName>Arthur Dent</ownerName>
|
|
<ownerEmail>info@trolltech.com</ownerEmail>
|
|
</head>
|
|
<body>
|
|
<outline text="Background">
|
|
<outline text="This is an example todo list."/>
|
|
</outline>
|
|
<outline text="Books to read">
|
|
<outline text="Science Fiction">
|
|
<outline text="Philip K. Dick">
|
|
<outline text="Do Androids Dream of Electical Sheep?"/>
|
|
<outline text="The Three Stigmata of Palmer Eldritch"/>
|
|
</outline>
|
|
<outline text="Robert A. Heinlein">
|
|
<outline text="Stranger in a Strange Land"/>
|
|
</outline>
|
|
<outline text="Isaac Asimov">
|
|
<outline text="Foundation and Empire"/>
|
|
</outline>
|
|
</outline>
|
|
<outline text="TQt Books (in English)">
|
|
<outline text="Blanchette &amp; Summerfield: C++ GUI Programming with TQt 3"/>
|
|
<outline text="Dalheimer: Programming with TQt"/>
|
|
<outline text="Griffith: KDE 2/TQt Programming Bible"/>
|
|
<outline text="Hughes: Linux Rapid Application Development"/>
|
|
<outline text="Solin: <a href="ntqt.html">TQt</a> Programming in 24 hours"/>
|
|
<outline text="Ward: <a href="ntqt.html">TQt</a> 2 Programming for Linux and Windows 2000"/>
|
|
</outline>
|
|
</outline>
|
|
<outline text="Shopping list">
|
|
<outline text="General">
|
|
<outline text="Towel"/>
|
|
<outline text="Hair dryer"/>
|
|
<outline text="Underpants"/>
|
|
</outline>
|
|
<outline text="For Sunday">
|
|
<outline text="Beef"/>
|
|
<outline text="Rice"/>
|
|
<outline text="Carrots"/>
|
|
<outline text="Beans"/>
|
|
<outline text="Beer"/>
|
|
<outline text="Wine"/>
|
|
<outline text="Orange juice"/>
|
|
</outline>
|
|
</outline>
|
|
<outline text="Write a letter to Ford">
|
|
</outline>
|
|
</body>
|
|
</opml>
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Header file (outlinetree.h):
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/outlinetree.h 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#ifndef OUTLINETREE_H
|
|
#define OUTLINETREE_H
|
|
|
|
#include <<a href="qlistview-h.html">ntqlistview.h</a>>
|
|
#include <<a href="qdom-h.html">ntqdom.h</a>>
|
|
|
|
class OutlineTree : public <a href="ntqlistview.html">TQListView</a>
|
|
{
|
|
<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
|
|
|
|
public:
|
|
OutlineTree( const <a href="ntqstring.html">TQString</a> fileName, TQWidget *parent = 0, const char *name = 0 );
|
|
~OutlineTree();
|
|
|
|
private:
|
|
<a href="qdomdocument.html">TQDomDocument</a> domTree;
|
|
void getHeaderInformation( const <a href="qdomelement.html">TQDomElement</a> &header );
|
|
void buildTree( <a href="qlistviewitem.html">TQListViewItem</a> *parentItem, const <a href="qdomelement.html">TQDomElement</a> &parentElement );
|
|
};
|
|
|
|
#endif // OUTLINETREE_H
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Implementation (outlinetree.cpp):
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/outlinetree.cpp 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#include "outlinetree.h"
|
|
#include <<a href="qfile-h.html">ntqfile.h</a>>
|
|
#include <<a href="qmessagebox-h.html">ntqmessagebox.h</a>>
|
|
|
|
<a name="f522"></a>OutlineTree::OutlineTree( const <a href="ntqstring.html">TQString</a> fileName, TQWidget *parent, const char *name )
|
|
: <a href="ntqlistview.html">TQListView</a>( parent, name )
|
|
{
|
|
// div. configuration of the list view
|
|
<a href="ntqlistview.html#addColumn">addColumn</a>( "Outlines" );
|
|
<a href="ntqlistview.html#setSorting">setSorting</a>( -1 );
|
|
<a href="ntqlistview.html#setRootIsDecorated">setRootIsDecorated</a>( TRUE );
|
|
|
|
// read the XML file and create DOM tree
|
|
<a href="ntqfile.html">TQFile</a> opmlFile( fileName );
|
|
<a name="x1915"></a> if ( !opmlFile.<a href="ntqfile.html#open">open</a>( <a href="ntqfile.html#open">IO_ReadOnly</a> ) ) {
|
|
<a name="x1917"></a> TQMessageBox::<a href="ntqmessagebox.html#critical">critical</a>( 0,
|
|
<a href="ntqobject.html#tr">tr</a>( "Critical Error" ),
|
|
<a href="ntqobject.html#tr">tr</a>( "Cannot open file %1" ).arg( fileName ) );
|
|
return;
|
|
}
|
|
if ( !domTree.setContent( &opmlFile ) ) {
|
|
TQMessageBox::<a href="ntqmessagebox.html#critical">critical</a>( 0,
|
|
<a href="ntqobject.html#tr">tr</a>( "Critical Error" ),
|
|
<a href="ntqobject.html#tr">tr</a>( "Parsing error for file %1" ).arg( fileName ) );
|
|
<a name="x1914"></a> opmlFile.<a href="ntqfile.html#close">close</a>();
|
|
return;
|
|
}
|
|
opmlFile.<a href="ntqfile.html#close">close</a>();
|
|
|
|
// get the header information from the DOM
|
|
<a href="qdomelement.html">TQDomElement</a> root = domTree.documentElement();
|
|
<a href="qdomnode.html">TQDomNode</a> node;
|
|
<a name="x1907"></a> node = root.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|
<a name="x1909"></a> while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|
<a name="x1911"></a><a name="x1908"></a> if ( node.<a href="qdomnode.html#isElement">isElement</a>() && node.<a href="qdomnode.html#nodeName">nodeName</a>() == "head" ) {
|
|
<a name="x1913"></a> <a href="qdomelement.html">TQDomElement</a> header = node.<a href="qdomnode.html#toElement">toElement</a>();
|
|
getHeaderInformation( header );
|
|
break;
|
|
}
|
|
<a name="x1910"></a> node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|
}
|
|
// create the tree view out of the DOM
|
|
node = root.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|
while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|
if ( node.<a href="qdomnode.html#isElement">isElement</a>() && node.<a href="qdomnode.html#nodeName">nodeName</a>() == "body" ) {
|
|
<a href="qdomelement.html">TQDomElement</a> body = node.<a href="qdomnode.html#toElement">toElement</a>();
|
|
buildTree( 0, body );
|
|
break;
|
|
}
|
|
node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|
}
|
|
}
|
|
|
|
OutlineTree::~OutlineTree()
|
|
{
|
|
}
|
|
|
|
void <a name="f523"></a>OutlineTree::getHeaderInformation( const <a href="qdomelement.html">TQDomElement</a> &header )
|
|
{
|
|
// visit all children of the header element and look if you can make
|
|
// something with it
|
|
<a href="qdomnode.html">TQDomNode</a> node = header.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|
while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|
if ( node.<a href="qdomnode.html#isElement">isElement</a>() ) {
|
|
// case for the different header entries
|
|
if ( node.<a href="qdomnode.html#nodeName">nodeName</a>() == "title" ) {
|
|
<a href="qdomtext.html">TQDomText</a> textChild = node.<a href="qdomnode.html#firstChild">firstChild</a>().toText();
|
|
if ( !textChild.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|
<a name="x1912"></a> <a href="ntqlistview.html#setColumnText">setColumnText</a>( 0, textChild.<a href="qdomnode.html#nodeValue">nodeValue</a>() );
|
|
}
|
|
}
|
|
}
|
|
node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|
}
|
|
}
|
|
|
|
void <a name="f524"></a>OutlineTree::buildTree( <a href="qlistviewitem.html">TQListViewItem</a> *parentItem, const <a href="qdomelement.html">TQDomElement</a> &parentElement )
|
|
{
|
|
<a href="qlistviewitem.html">TQListViewItem</a> *thisItem = 0;
|
|
<a href="qdomnode.html">TQDomNode</a> node = parentElement.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|
while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|
if ( node.<a href="qdomnode.html#isElement">isElement</a>() && node.<a href="qdomnode.html#nodeName">nodeName</a>() == "outline" ) {
|
|
// add a new list view item for the outline
|
|
if ( parentItem == 0 )
|
|
thisItem = new <a href="qlistviewitem.html">TQListViewItem</a>( this, thisItem );
|
|
else
|
|
thisItem = new <a href="qlistviewitem.html">TQListViewItem</a>( parentItem, thisItem );
|
|
<a name="x1916"></a> thisItem-><a href="qlistviewitem.html#setText">setText</a>( 0, node.<a href="qdomnode.html#toElement">toElement</a>().attribute( "text" ) );
|
|
// recursive build of the tree
|
|
buildTree( thisItem, node.<a href="qdomnode.html#toElement">toElement</a>() );
|
|
}
|
|
node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|
}
|
|
}
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Main (main.cpp):
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#include <<a href="qapplication-h.html">ntqapplication.h</a>>
|
|
#include "outlinetree.h"
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
<a href="ntqapplication.html">TQApplication</a> a( argc, argv );
|
|
|
|
OutlineTree outline( "todos.opml" );
|
|
a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( &outline );
|
|
<a name="x1920"></a> outline.<a href="ntqwidget.html#show">show</a>();
|
|
|
|
return a.<a href="ntqapplication.html#exec">exec</a>();
|
|
}
|
|
</pre>
|
|
|
|
<p>See also <a href="xml-examples.html">TQt XML Examples</a>.
|
|
|
|
<!-- eof -->
|
|
<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>TQt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|