| [190] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|---|
| 2 | <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/xml/outliner/outliner.doc:5 -->
|
|---|
| 3 | <html>
|
|---|
| 4 | <head>
|
|---|
| 5 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|---|
| 6 | <title>Outliner to show use of DOM</title>
|
|---|
| 7 | <style type="text/css"><!--
|
|---|
| 8 | fn { margin-left: 1cm; text-indent: -1cm; }
|
|---|
| 9 | a:link { color: #004faf; text-decoration: none }
|
|---|
| 10 | a:visited { color: #672967; text-decoration: none }
|
|---|
| 11 | body { background: #ffffff; color: black; }
|
|---|
| 12 | --></style>
|
|---|
| 13 | </head>
|
|---|
| 14 | <body>
|
|---|
| 15 |
|
|---|
| 16 | <table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|---|
| 17 | <tr bgcolor="#E5E5E5">
|
|---|
| 18 | <td valign=center>
|
|---|
| 19 | <a href="index.html">
|
|---|
| 20 | <font color="#004faf">Home</font></a>
|
|---|
| 21 | | <a href="classes.html">
|
|---|
| 22 | <font color="#004faf">All Classes</font></a>
|
|---|
| 23 | | <a href="mainclasses.html">
|
|---|
| 24 | <font color="#004faf">Main Classes</font></a>
|
|---|
| 25 | | <a href="annotated.html">
|
|---|
| 26 | <font color="#004faf">Annotated</font></a>
|
|---|
| 27 | | <a href="groups.html">
|
|---|
| 28 | <font color="#004faf">Grouped Classes</font></a>
|
|---|
| 29 | | <a href="functions.html">
|
|---|
| 30 | <font color="#004faf">Functions</font></a>
|
|---|
| 31 | </td>
|
|---|
| 32 | <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>
|
|---|
| 33 |
|
|---|
| 34 |
|
|---|
| 35 | <p>
|
|---|
| 36 | <p> This example presents a small outliner program to show the basic usage of
|
|---|
| 37 | the <a href="xml.html#dom">DOM classes</a>. The format of the outlines
|
|---|
| 38 | is the OPML format as described in http://www.opml.org/spec.
|
|---|
| 39 | <p> This example shows how to load a DOM tree from an XML file and how to
|
|---|
| 40 | traverse it.
|
|---|
| 41 | <p> <hr>
|
|---|
| 42 | <p> Sample XML file (todos.opml):
|
|---|
| 43 | <p> <pre><?xml version="1.0" encoding="ISO-8859-1"?>
|
|---|
| 44 | <opml version="1.0">
|
|---|
| 45 | <head>
|
|---|
| 46 | <title>Todo List</title>
|
|---|
| 47 | <dateCreated>Tue, 31 Oct 2000 17:00:17 CET</dateCreated>
|
|---|
| 48 | <dateModified>Tue, 31 Oct 2000 17:00:17 CET</dateModified>
|
|---|
| 49 | <ownerName>Arthur Dent</ownerName>
|
|---|
| 50 | <ownerEmail>info@trolltech.com</ownerEmail>
|
|---|
| 51 | </head>
|
|---|
| 52 | <body>
|
|---|
| 53 | <outline text="Background">
|
|---|
| 54 | <outline text="This is an example todo list."/>
|
|---|
| 55 | </outline>
|
|---|
| 56 | <outline text="Books to read">
|
|---|
| 57 | <outline text="Science Fiction">
|
|---|
| 58 | <outline text="Philip K. Dick">
|
|---|
| 59 | <outline text="Do Androids Dream of Electical Sheep?"/>
|
|---|
| 60 | <outline text="The Three Stigmata of Palmer Eldritch"/>
|
|---|
| 61 | </outline>
|
|---|
| 62 | <outline text="Robert A. Heinlein">
|
|---|
| 63 | <outline text="Stranger in a Strange Land"/>
|
|---|
| 64 | </outline>
|
|---|
| 65 | <outline text="Isaac Asimov">
|
|---|
| 66 | <outline text="Foundation and Empire"/>
|
|---|
| 67 | </outline>
|
|---|
| 68 | </outline>
|
|---|
| 69 | <outline text="Qt Books (in English)">
|
|---|
| 70 | <outline text="Blanchette &amp; Summerfield: C++ GUI Programming with Qt 3"/>
|
|---|
| 71 | <outline text="Dalheimer: Programming with Qt"/>
|
|---|
| 72 | <outline text="Griffith: KDE 2/Qt Programming Bible"/>
|
|---|
| 73 | <outline text="Hughes: Linux Rapid Application Development"/>
|
|---|
| 74 | <outline text="Solin: <a href="qt.html">Qt</a> Programming in 24 hours"/>
|
|---|
| 75 | <outline text="Ward: <a href="qt.html">Qt</a> 2 Programming for Linux and Windows 2000"/>
|
|---|
| 76 | </outline>
|
|---|
| 77 | </outline>
|
|---|
| 78 | <outline text="Shopping list">
|
|---|
| 79 | <outline text="General">
|
|---|
| 80 | <outline text="Towel"/>
|
|---|
| 81 | <outline text="Hair dryer"/>
|
|---|
| 82 | <outline text="Underpants"/>
|
|---|
| 83 | </outline>
|
|---|
| 84 | <outline text="For Sunday">
|
|---|
| 85 | <outline text="Beef"/>
|
|---|
| 86 | <outline text="Rice"/>
|
|---|
| 87 | <outline text="Carrots"/>
|
|---|
| 88 | <outline text="Beans"/>
|
|---|
| 89 | <outline text="Beer"/>
|
|---|
| 90 | <outline text="Wine"/>
|
|---|
| 91 | <outline text="Orange juice"/>
|
|---|
| 92 | </outline>
|
|---|
| 93 | </outline>
|
|---|
| 94 | <outline text="Write a letter to Ford">
|
|---|
| 95 | </outline>
|
|---|
| 96 | </body>
|
|---|
| 97 | </opml>
|
|---|
| 98 | </pre>
|
|---|
| 99 |
|
|---|
| 100 | <p> <hr>
|
|---|
| 101 | <p> Header file (outlinetree.h):
|
|---|
| 102 | <p> <pre>/****************************************************************************
|
|---|
| 103 | ** $Id: outliner-example.html 2051 2007-02-21 10:04:20Z chehrlic $
|
|---|
| 104 | **
|
|---|
| 105 | ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|---|
| 106 | **
|
|---|
| 107 | ** This file is part of an example program for Qt. This example
|
|---|
| 108 | ** program may be used, distributed and modified without limitation.
|
|---|
| 109 | **
|
|---|
| 110 | *****************************************************************************/
|
|---|
| 111 |
|
|---|
| 112 | #ifndef OUTLINETREE_H
|
|---|
| 113 | #define OUTLINETREE_H
|
|---|
| 114 |
|
|---|
| 115 | #include <<a href="qlistview-h.html">qlistview.h</a>>
|
|---|
| 116 | #include <<a href="qdom-h.html">qdom.h</a>>
|
|---|
| 117 |
|
|---|
| 118 | class OutlineTree : public <a href="qlistview.html">QListView</a>
|
|---|
| 119 | {
|
|---|
| 120 | <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
|
|---|
| 121 |
|
|---|
| 122 | public:
|
|---|
| 123 | OutlineTree( const <a href="qstring.html">QString</a> fileName, QWidget *parent = 0, const char *name = 0 );
|
|---|
| 124 | ~OutlineTree();
|
|---|
| 125 |
|
|---|
| 126 | private:
|
|---|
| 127 | <a href="qdomdocument.html">QDomDocument</a> domTree;
|
|---|
| 128 | void getHeaderInformation( const <a href="qdomelement.html">QDomElement</a> &header );
|
|---|
| 129 | void buildTree( <a href="qlistviewitem.html">QListViewItem</a> *parentItem, const <a href="qdomelement.html">QDomElement</a> &parentElement );
|
|---|
| 130 | };
|
|---|
| 131 |
|
|---|
| 132 | #endif // OUTLINETREE_H
|
|---|
| 133 | </pre>
|
|---|
| 134 |
|
|---|
| 135 | <p> <hr>
|
|---|
| 136 | <p> Implementation (outlinetree.cpp):
|
|---|
| 137 | <p> <pre>/****************************************************************************
|
|---|
| 138 | ** $Id: outliner-example.html 2051 2007-02-21 10:04:20Z chehrlic $
|
|---|
| 139 | **
|
|---|
| 140 | ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|---|
| 141 | **
|
|---|
| 142 | ** This file is part of an example program for Qt. This example
|
|---|
| 143 | ** program may be used, distributed and modified without limitation.
|
|---|
| 144 | **
|
|---|
| 145 | *****************************************************************************/
|
|---|
| 146 |
|
|---|
| 147 | #include "outlinetree.h"
|
|---|
| 148 | #include <<a href="qfile-h.html">qfile.h</a>>
|
|---|
| 149 | #include <<a href="qmessagebox-h.html">qmessagebox.h</a>>
|
|---|
| 150 |
|
|---|
| 151 | <a name="f522"></a>OutlineTree::OutlineTree( const <a href="qstring.html">QString</a> fileName, QWidget *parent, const char *name )
|
|---|
| 152 | : <a href="qlistview.html">QListView</a>( parent, name )
|
|---|
| 153 | {
|
|---|
| 154 | // div. configuration of the list view
|
|---|
| 155 | <a href="qlistview.html#addColumn">addColumn</a>( "Outlines" );
|
|---|
| 156 | <a href="qlistview.html#setSorting">setSorting</a>( -1 );
|
|---|
| 157 | <a href="qlistview.html#setRootIsDecorated">setRootIsDecorated</a>( TRUE );
|
|---|
| 158 |
|
|---|
| 159 | // read the XML file and create DOM tree
|
|---|
| 160 | <a href="qfile.html">QFile</a> opmlFile( fileName );
|
|---|
| 161 | <a name="x1915"></a> if ( !opmlFile.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_ReadOnly</a> ) ) {
|
|---|
| 162 | <a name="x1917"></a> QMessageBox::<a href="qmessagebox.html#critical">critical</a>( 0,
|
|---|
| 163 | <a href="qobject.html#tr">tr</a>( "Critical Error" ),
|
|---|
| 164 | <a href="qobject.html#tr">tr</a>( "Cannot open file %1" ).arg( fileName ) );
|
|---|
| 165 | return;
|
|---|
| 166 | }
|
|---|
| 167 | if ( !domTree.setContent( &opmlFile ) ) {
|
|---|
| 168 | QMessageBox::<a href="qmessagebox.html#critical">critical</a>( 0,
|
|---|
| 169 | <a href="qobject.html#tr">tr</a>( "Critical Error" ),
|
|---|
| 170 | <a href="qobject.html#tr">tr</a>( "Parsing error for file %1" ).arg( fileName ) );
|
|---|
| 171 | <a name="x1914"></a> opmlFile.<a href="qfile.html#close">close</a>();
|
|---|
| 172 | return;
|
|---|
| 173 | }
|
|---|
| 174 | opmlFile.<a href="qfile.html#close">close</a>();
|
|---|
| 175 |
|
|---|
| 176 | // get the header information from the DOM
|
|---|
| 177 | <a href="qdomelement.html">QDomElement</a> root = domTree.documentElement();
|
|---|
| 178 | <a href="qdomnode.html">QDomNode</a> node;
|
|---|
| 179 | <a name="x1907"></a> node = root.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|---|
| 180 | <a name="x1909"></a> while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|---|
| 181 | <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" ) {
|
|---|
| 182 | <a name="x1913"></a> <a href="qdomelement.html">QDomElement</a> header = node.<a href="qdomnode.html#toElement">toElement</a>();
|
|---|
| 183 | getHeaderInformation( header );
|
|---|
| 184 | break;
|
|---|
| 185 | }
|
|---|
| 186 | <a name="x1910"></a> node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|---|
| 187 | }
|
|---|
| 188 | // create the tree view out of the DOM
|
|---|
| 189 | node = root.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|---|
| 190 | while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|---|
| 191 | if ( node.<a href="qdomnode.html#isElement">isElement</a>() && node.<a href="qdomnode.html#nodeName">nodeName</a>() == "body" ) {
|
|---|
| 192 | <a href="qdomelement.html">QDomElement</a> body = node.<a href="qdomnode.html#toElement">toElement</a>();
|
|---|
| 193 | buildTree( 0, body );
|
|---|
| 194 | break;
|
|---|
| 195 | }
|
|---|
| 196 | node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|---|
| 197 | }
|
|---|
| 198 | }
|
|---|
| 199 |
|
|---|
| 200 | OutlineTree::~OutlineTree()
|
|---|
| 201 | {
|
|---|
| 202 | }
|
|---|
| 203 |
|
|---|
| 204 | void <a name="f523"></a>OutlineTree::getHeaderInformation( const <a href="qdomelement.html">QDomElement</a> &header )
|
|---|
| 205 | {
|
|---|
| 206 | // visit all children of the header element and look if you can make
|
|---|
| 207 | // something with it
|
|---|
| 208 | <a href="qdomnode.html">QDomNode</a> node = header.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|---|
| 209 | while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|---|
| 210 | if ( node.<a href="qdomnode.html#isElement">isElement</a>() ) {
|
|---|
| 211 | // case for the different header entries
|
|---|
| 212 | if ( node.<a href="qdomnode.html#nodeName">nodeName</a>() == "title" ) {
|
|---|
| 213 | <a href="qdomtext.html">QDomText</a> textChild = node.<a href="qdomnode.html#firstChild">firstChild</a>().toText();
|
|---|
| 214 | if ( !textChild.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|---|
| 215 | <a name="x1912"></a> <a href="qlistview.html#setColumnText">setColumnText</a>( 0, textChild.<a href="qdomnode.html#nodeValue">nodeValue</a>() );
|
|---|
| 216 | }
|
|---|
| 217 | }
|
|---|
| 218 | }
|
|---|
| 219 | node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|---|
| 220 | }
|
|---|
| 221 | }
|
|---|
| 222 |
|
|---|
| 223 | void <a name="f524"></a>OutlineTree::buildTree( <a href="qlistviewitem.html">QListViewItem</a> *parentItem, const <a href="qdomelement.html">QDomElement</a> &parentElement )
|
|---|
| 224 | {
|
|---|
| 225 | <a href="qlistviewitem.html">QListViewItem</a> *thisItem = 0;
|
|---|
| 226 | <a href="qdomnode.html">QDomNode</a> node = parentElement.<a href="qdomnode.html#firstChild">firstChild</a>();
|
|---|
| 227 | while ( !node.<a href="qdomnode.html#isNull">isNull</a>() ) {
|
|---|
| 228 | if ( node.<a href="qdomnode.html#isElement">isElement</a>() && node.<a href="qdomnode.html#nodeName">nodeName</a>() == "outline" ) {
|
|---|
| 229 | // add a new list view item for the outline
|
|---|
| 230 | if ( parentItem == 0 )
|
|---|
| 231 | thisItem = new <a href="qlistviewitem.html">QListViewItem</a>( this, thisItem );
|
|---|
| 232 | else
|
|---|
| 233 | thisItem = new <a href="qlistviewitem.html">QListViewItem</a>( parentItem, thisItem );
|
|---|
| 234 | <a name="x1916"></a> thisItem-><a href="qlistviewitem.html#setText">setText</a>( 0, node.<a href="qdomnode.html#toElement">toElement</a>().attribute( "text" ) );
|
|---|
| 235 | // recursive build of the tree
|
|---|
| 236 | buildTree( thisItem, node.<a href="qdomnode.html#toElement">toElement</a>() );
|
|---|
| 237 | }
|
|---|
| 238 | node = node.<a href="qdomnode.html#nextSibling">nextSibling</a>();
|
|---|
| 239 | }
|
|---|
| 240 | }
|
|---|
| 241 | </pre>
|
|---|
| 242 |
|
|---|
| 243 | <p> <hr>
|
|---|
| 244 | <p> Main (main.cpp):
|
|---|
| 245 | <p> <pre>/****************************************************************************
|
|---|
| 246 | ** $Id: outliner-example.html 2051 2007-02-21 10:04:20Z chehrlic $
|
|---|
| 247 | **
|
|---|
| 248 | ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|---|
| 249 | **
|
|---|
| 250 | ** This file is part of an example program for Qt. This example
|
|---|
| 251 | ** program may be used, distributed and modified without limitation.
|
|---|
| 252 | **
|
|---|
| 253 | *****************************************************************************/
|
|---|
| 254 |
|
|---|
| 255 | #include <<a href="qapplication-h.html">qapplication.h</a>>
|
|---|
| 256 | #include "outlinetree.h"
|
|---|
| 257 |
|
|---|
| 258 | int main( int argc, char **argv )
|
|---|
| 259 | {
|
|---|
| 260 | <a href="qapplication.html">QApplication</a> a( argc, argv );
|
|---|
| 261 |
|
|---|
| 262 | OutlineTree outline( "todos.opml" );
|
|---|
| 263 | a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &outline );
|
|---|
| 264 | <a name="x1920"></a> outline.<a href="qwidget.html#show">show</a>();
|
|---|
| 265 |
|
|---|
| 266 | return a.<a href="qapplication.html#exec">exec</a>();
|
|---|
| 267 | }
|
|---|
| 268 | </pre>
|
|---|
| 269 |
|
|---|
| 270 | <p>See also <a href="xml-examples.html">Qt XML Examples</a>.
|
|---|
| 271 |
|
|---|
| 272 | <!-- eof -->
|
|---|
| 273 | <p><address><hr><div align=center>
|
|---|
| 274 | <table width=100% cellspacing=0 border=0><tr>
|
|---|
| 275 | <td>Copyright © 2007
|
|---|
| 276 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|---|
| 277 | <td align=right><div align=right>Qt 3.3.8</div>
|
|---|
| 278 | </table></div></address></body>
|
|---|
| 279 | </html>
|
|---|
