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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/qnpinstance.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
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| -rw-r--r-- | doc/html/qnpinstance.html | 321 |
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diff --git a/doc/html/qnpinstance.html b/doc/html/qnpinstance.html new file mode 100644 index 0000000..ca643f2 --- /dev/null +++ b/doc/html/qnpinstance.html @@ -0,0 +1,321 @@ +<!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/extensions/nsplugin/src/qnp.cpp:870 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>QNPInstance Class</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>QNPInstance Class Reference</h1> + +<p>The QNPInstance class provides a QObject that is a web browser plugin. +<a href="#details">More...</a> +<p>This class is part of the <b>Qt Netscape Extension</b>. +<p><tt>#include <<a href="qnp-h.html">qnp.h</a>></tt> +<p>Inherits <a href="qobject.html">QObject</a>. +<p><a href="qnpinstance-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn><a href="#~QNPInstance"><b>~QNPInstance</b></a> ()</li> +<li class=fn>int <a href="#argc"><b>argc</b></a> () const</li> +<li class=fn>const char * <a href="#argn"><b>argn</b></a> ( int i ) const</li> +<li class=fn>const char * <a href="#argv"><b>argv</b></a> ( int i ) const</li> +<li class=fn>enum <a href="#Reason-enum"><b>Reason</b></a> { ReasonDone = 0, ReasonBreak = 1, ReasonError = 2, ReasonUnknown = -1 }</li> +<li class=fn>const char * <a href="#arg"><b>arg</b></a> ( const char * name ) const</li> +<li class=fn>enum <a href="#InstanceMode-enum"><b>InstanceMode</b></a> { Embed = 1, Full = 2, Background = 3 }</li> +<li class=fn>InstanceMode <a href="#mode"><b>mode</b></a> () const</li> +<li class=fn>const char * <a href="#userAgent"><b>userAgent</b></a> () const</li> +<li class=fn>virtual QNPWidget * <a href="#newWindow"><b>newWindow</b></a> ()</li> +<li class=fn>QNPWidget * <a href="#widget"><b>widget</b></a> ()</li> +<li class=fn>enum <a href="#StreamMode-enum"><b>StreamMode</b></a> { Normal = 1, Seek = 2, AsFile = 3, AsFileOnly = 4 }</li> +<li class=fn>virtual bool <a href="#newStreamCreated"><b>newStreamCreated</b></a> ( QNPStream *, StreamMode & smode )</li> +<li class=fn>virtual int <a href="#writeReady"><b>writeReady</b></a> ( QNPStream * )</li> +<li class=fn>virtual int <a href="#write"><b>write</b></a> ( QNPStream *, int offset, int len, void * buffer )</li> +<li class=fn>virtual void <a href="#streamDestroyed"><b>streamDestroyed</b></a> ( QNPStream * )</li> +<li class=fn>void <a href="#status"><b>status</b></a> ( const char * msg )</li> +<li class=fn>void <a href="#getURLNotify"><b>getURLNotify</b></a> ( const char * url, const char * window = 0, void * data = 0 )</li> +<li class=fn>void <a href="#getURL"><b>getURL</b></a> ( const char * url, const char * window = 0 )</li> +<li class=fn>void <a href="#postURL"><b>postURL</b></a> ( const char * url, const char * window, uint len, const char * buf, bool file )</li> +<li class=fn>QNPStream * <a href="#newStream"><b>newStream</b></a> ( const char * mimetype, const char * window, bool as_file = FALSE )</li> +<li class=fn>virtual void <a href="#streamAsFile"><b>streamAsFile</b></a> ( QNPStream *, const char * fname )</li> +<li class=fn>void * <a href="#getJavaPeer"><b>getJavaPeer</b></a> () const</li> +<li class=fn>virtual void <a href="#notifyURL"><b>notifyURL</b></a> ( const char * url, Reason r, void * notifyData )</li> +<li class=fn>virtual bool <a href="#printFullPage"><b>printFullPage</b></a> ()</li> +<li class=fn>virtual void <a href="#print"><b>print</b></a> ( QPainter * )</li> +</ul> +<h2>Protected Members</h2> +<ul> +<li class=fn><a href="#QNPInstance"><b>QNPInstance</b></a> ()</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> +<p> This class is defined in the <b>Qt <a href="netscape-plugin.html#Netscape">Netscape</a> Extension</b>, which can be found in the <tt>qt/extensions</tt> directory. It is not included in the main Qt API. +<p> + +The QNPInstance class provides a <a href="qobject.html">QObject</a> that is a web browser plugin. +<p> +<p> Deriving from QNPInstance creates an object that represents a +single <tt><EMBED></tt> tag in an HTML document. +<p> The QNPInstance is responsible for creating an appropriate +<a href="qnpwidget.html">QNPWidget</a> window if required (not all plugins have windows), and +for interacting with the input/output facilities intrinsic to +plugins. +<p> Note that there is <em>absolutely no guarantee</em> regarding the order +in which functions are called. Sometimes the browser will call +<a href="#newWindow">newWindow</a>() first, at other times, <a href="#newStreamCreated">newStreamCreated</a>() will be +called first (assuming the <tt><EMBED></tt> tag has a SRC parameter). +<p> <em>None of Qt's GUI functionality</em> may be used until after the +first call to newWindow(). This includes any use of <a href="qpaintdevice.html">QPaintDevice</a> +(i.e. <a href="qpixmap.html">QPixmap</a>, <a href="qwidget.html">QWidget</a>, and all subclasses), <a href="qapplication.html">QApplication</a>, anything +related to <a href="qpainter.html">QPainter</a> (<a href="qbrush.html">QBrush</a>, etc.), fonts, <a href="qmovie.html">QMovie</a>, <a href="qtooltip.html">QToolTip</a>, etc. +Useful classes which specifically <em>can</em> be used are <a href="qimage.html">QImage</a>, +<a href="qfile.html">QFile</a>, and <a href="qbuffer.html">QBuffer</a>. +<p> This restriction can easily be accommodated by structuring your +plugin so that the task of the QNPInstance is to gather data, +while the task of the <a href="qnpwidget.html">QNPWidget</a> is to provide a graphical +interface to that data. + +<hr><h2>Member Type Documentation</h2> +<h3 class=fn><a name="InstanceMode-enum"></a>QNPInstance::InstanceMode</h3> + +<p> This enum type provides Qt-style names for three #defines in +<tt>npapi.h</tt>: +<ul> +<li><tt>QNPInstance::Embed</tt> - corresponds to NP_EMBED +<li><tt>QNPInstance::Full</tt> - corresponds to NP_FULL +<li><tt>QNPInstance::Background</tt> - corresponds to NP_BACKGROUND +</ul><p> +<h3 class=fn><a name="Reason-enum"></a>QNPInstance::Reason</h3> + +<ul> +<li><tt>QNPInstance::ReasonDone</tt> +<li><tt>QNPInstance::ReasonBreak</tt> +<li><tt>QNPInstance::ReasonError</tt> +<li><tt>QNPInstance::ReasonUnknown</tt> +</ul> +<h3 class=fn><a name="StreamMode-enum"></a>QNPInstance::StreamMode</h3> + +<ul> +<li><tt>QNPInstance::Normal</tt> +<li><tt>QNPInstance::Seek</tt> +<li><tt>QNPInstance::AsFile</tt> +<li><tt>QNPInstance::AsFileOnly</tt> +</ul> +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="QNPInstance"></a>QNPInstance::QNPInstance ()<tt> [protected]</tt> +</h3> +Creates a QNPInstance. +<p> Can only be called from within a derived class created within +<a href="qnplugin.html#newInstance">QNPlugin::newInstance</a>(). + +<h3 class=fn><a name="~QNPInstance"></a>QNPInstance::~QNPInstance () +</h3> +Called when the plugin instance is about to be deleted. + +<h3 class=fn>const char * <a name="arg"></a>QNPInstance::arg ( const char * name ) const +</h3> +Returns the value of the named arguments, or 0 if no argument +called <em>name</em> appears in the <tt><EMBED></tt> tag of this instance. +If the argument appears, but has no value assigned, the empty +string is returned. In summary: +<p> <center><table cellpadding="4" cellspacing="2" border="0"> +<tr bgcolor="#a2c511"> <th valign="top">Tag <th valign="top">Result +<tr bgcolor="#f0f0f0"> <td valign="top"><tt><EMBED ...></tt> <td valign="top">arg("FOO") == 0 +<tr bgcolor="#d0d0d0"> <td valign="top"><tt><EMBED FOO ...></tt> <td valign="top">arg("FOO") == "" +<tr bgcolor="#f0f0f0"> <td valign="top"><tt><EMBED FOO=BAR ...></tt> <td valign="top">arg("FOO") == "BAR" +</table></center> + +<h3 class=fn>int <a name="argc"></a>QNPInstance::argc () const +</h3> +Returns the number of arguments to the instance. Note that you +should not normally rely on the ordering of arguments, and +note that the SGML specification does not permit multiple +arguments with the same name. +<p> <p>See also <a href="#arg">arg</a>() and <a href="#argn">argn</a>(). + +<h3 class=fn>const char * <a name="argn"></a>QNPInstance::argn ( int i ) const +</h3> +Returns the name of the <em>i</em>-th argument. +<p> <p>See also <a href="#argc">argc</a>() and <a href="#argv">argv</a>(). + +<h3 class=fn>const char * <a name="argv"></a>QNPInstance::argv ( int i ) const +</h3> +Returns the value of the <em>i</em>-th argument. +<p> \as <a href="#argc">argc</a>(), <a href="#arg">arg</a>() + +<h3 class=fn>void * <a name="getJavaPeer"></a>QNPInstance::getJavaPeer () const +</h3> +Returns the Java object associated with the plugin instance, an +object of the <a href="qnplugin.html#getJavaClass">plugin's Java + class</a>, or 0 if the plug-in does not have a Java class, +Java is disabled, or an error occurred. +<p> The return value is actually a <tt>jref</tt> we use <tt>void*</tt> so as to +avoid burdening plugins which do not require Java. +<p> <p>See also <a href="qnplugin.html#getJavaClass">QNPlugin::getJavaClass</a>() and <a href="qnplugin.html#getJavaEnv">QNPlugin::getJavaEnv</a>(). + +<h3 class=fn>void <a name="getURL"></a>QNPInstance::getURL ( const char * url, const char * window = 0 ) +</h3> +Requests that the <em>url</em> be retrieved and sent to the named <em>window</em>. See <a href="netscape-plugin.html#Netscape">Netscape</a>'s JavaScript documentation for an explanation +of window names. + +<h3 class=fn>void <a name="getURLNotify"></a>QNPInstance::getURLNotify ( const char * url, const char * window = 0, void * data = 0 ) +</h3> +Requests that the given <em>url</em> be retrieved and sent to +the named <em>window</em>. See <a href="netscape-plugin.html#Netscape">Netscape</a>'s JavaScript documentation for +an explanation of window names. Passes the arguments including <em>data</em> to NPN_GetURLNotify. +<p> +<a href="http://developer.netscape.com/docs/manuals/communicator/plugin/refpgur.htm#npngeturlnotify">Netscape: NPN_GetURLNotify method</a> + +<h3 class=fn><a href="qnpinstance.html#InstanceMode-enum">InstanceMode</a> <a name="mode"></a>QNPInstance::mode () const +</h3> +Returns the mode of the plugin. + +<h3 class=fn><a href="qnpstream.html">QNPStream</a> * <a name="newStream"></a>QNPInstance::newStream ( const char * mimetype, const char * window, bool as_file = FALSE ) +</h3> +<p><b>This function is under development and is subject to change.</b> +<p> This function is <em>not tested</em>. +<p> Requests the creation of a new data stream <em>from</em> the plugin. +The MIME type and window are passed in <em>mimetype</em> and <em>window</em>. +<em>as_file</em> holds the <a href="#StreamMode-enum">AsFileOnly</a> flag. It is an interface to the +NPN_NewStream function of the <a href="netscape-plugin.html#Netscape">Netscape</a> Plugin API. + +<h3 class=fn>bool <a name="newStreamCreated"></a>QNPInstance::newStreamCreated ( <a href="qnpstream.html">QNPStream</a> *, <a href="qnpinstance.html#StreamMode-enum">StreamMode</a> & smode )<tt> [virtual]</tt> +</h3> + +<p> This function is called when a new stream has been created. The +instance should return TRUE if it accepts the processing of the +stream. If the instance requires the stream as a file, it should +set <em>smode</em> to <a href="#StreamMode-enum">AsFileOnly</a>, in which case the data will be +delivered some time later to the <a href="#streamAsFile">streamAsFile</a>() function. +Otherwise, the data will be delivered in chunks to the <a href="#write">write</a>() +function, which must consume at least as much data as returned +by the most recent call to <a href="#writeReady">writeReady</a>(). +<p> Note that the <a href="#StreamMode-enum">AsFileOnly</a> method is not supported by <a href="netscape-plugin.html#Netscape">Netscape</a> +2.0 and MSIE 3.0. +<p> The default implementation accepts any stream. + +<h3 class=fn><a href="qnpwidget.html">QNPWidget</a> * <a name="newWindow"></a>QNPInstance::newWindow ()<tt> [virtual]</tt> +</h3> +Called at most once, at some time after the QNPInstance is +created. If the plugin requires a window, this function should +return a derived class of <a href="qnpwidget.html">QNPWidget</a> that provides the required +interface. + +<p>Example: <a href="grapher-nsplugin-example.html#x2751">grapher/grapher.cpp</a>. +<h3 class=fn>void <a name="notifyURL"></a>QNPInstance::notifyURL ( const char * url, <a href="qnpinstance.html#Reason-enum">Reason</a> r, void * notifyData )<tt> [virtual]</tt> +</h3> +<p><b>This function is under development and is subject to change.</b> +<p> This function is <em>not tested</em>. +<p> Called whenever a <em>url</em> is notified after a call to +NPN_GetURLNotify with <em>notifyData</em>. The reason is given in <em>r</em>. +<p> It is an encapsulation of the NPP_URLNotify function of the +<a href="netscape-plugin.html#Netscape">Netscape</a> Plugin API. +<p> See also: +<a href="http://developer.netscape.com/docs/manuals/communicator/plugin/refpgur.htm#nppurlnotify">Netscape: NPP_URLNotify method</a> + +<h3 class=fn>void <a name="postURL"></a>QNPInstance::postURL ( const char * url, const char * window, uint len, const char * buf, bool file ) +</h3> +<p><b>This function is under development and is subject to change.</b> +<p> This function is <em>not tested</em>. +<p> It is an interface to the NPN_PostURL function of the <a href="netscape-plugin.html#Netscape">Netscape</a> +Plugin API. +<p> Passes <em>url</em>, <em>window</em>, <em>buf</em>, <em>len</em>, and <em>file</em> to +NPN_PostURL. + +<h3 class=fn>void <a name="print"></a>QNPInstance::print ( <a href="qpainter.html">QPainter</a> * )<tt> [virtual]</tt> +</h3> +<p><b>This function is under development and is subject to change.</b> +<p> This function is <em>not tested</em>. +<p> Print the instance embedded in a page. +<p> It is an encapsulation of the NPP_Print function of the <a href="netscape-plugin.html#Netscape">Netscape</a> +Plugin API. + +<h3 class=fn>bool <a name="printFullPage"></a>QNPInstance::printFullPage ()<tt> [virtual]</tt> +</h3> +<p><b>This function is under development and is subject to change.</b> +<p> This function is <em>not tested</em>. +<p> It is an encapsulation of the NPP_Print function of the <a href="netscape-plugin.html#Netscape">Netscape</a> +Plugin API. + +<h3 class=fn>void <a name="status"></a>QNPInstance::status ( const char * msg ) +</h3> +Sets the status message in the browser containing this instance to +<em>msg</em>. + +<h3 class=fn>void <a name="streamAsFile"></a>QNPInstance::streamAsFile ( <a href="qnpstream.html">QNPStream</a> *, const char * fname )<tt> [virtual]</tt> +</h3> +Called when a stream is delivered as a single file called <em>fname</em> +rather than as chunks. This may be simpler for a plugin to deal +with, but precludes any incremental behavior. +<p> Note that the <a href="#StreamMode-enum">AsFileOnly</a> method is not supported by <a href="netscape-plugin.html#Netscape">Netscape</a> +2.0 and MSIE 3.0. +<p> <p>See also <a href="#newStreamCreated">newStreamCreated</a>() and <a href="#newStream">newStream</a>(). + +<h3 class=fn>void <a name="streamDestroyed"></a>QNPInstance::streamDestroyed ( <a href="qnpstream.html">QNPStream</a> * )<tt> [virtual]</tt> +</h3> +Called when a stream is destroyed. At this point, the stream may +be complete() and okay(). If it is not okay(), then an error has +occurred. If it is okay(), but not complete(), then the user has +cancelled the transmission; do not give an error message in this +case. + +<h3 class=fn>const char * <a name="userAgent"></a>QNPInstance::userAgent () const +</h3> +Returns the user agent (browser name) containing this instance. + +<h3 class=fn><a href="qnpwidget.html">QNPWidget</a> * <a name="widget"></a>QNPInstance::widget () +</h3> +Returns the plugin window created by <a href="#newWindow">newWindow</a>(), if any. + +<h3 class=fn>int <a name="write"></a>QNPInstance::write ( <a href="qnpstream.html">QNPStream</a> *, int offset, int len, void * buffer )<tt> [virtual]</tt> +</h3> + +<p> Called when incoming data is available for processing by the +instance. The instance <em>must</em> consume at least the amount that it +returned in the most recent call to <a href="#writeReady">writeReady</a>(), but it may +consume up to the amount given by <em>len</em>. <em>buffer</em> is the data +available for consumption. The <em>offset</em> argument is merely an +informational value indicating the total amount of data that has +been consumed in prior calls. +<p> This function should return the amount of data actually consumed. + +<p>Example: <a href="grapher-nsplugin-example.html#x2752">grapher/grapher.cpp</a>. +<h3 class=fn>int <a name="writeReady"></a>QNPInstance::writeReady ( <a href="qnpstream.html">QNPStream</a> * )<tt> [virtual]</tt> +</h3> +Returns the minimum amount of data the instance is willing to +receive from the given stream. +<p> The default returns a very large value. + +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">Qt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<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>Qt 3.3.8</div> +</table></div></address></body> +</html> |