Documentation/Source/eric5.UI.Previewer.html

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<h1>eric5.UI.Previewer</h1>
<p>
Module implementing a previewer widget for HTML, Markdown and ReST files.
</p>
<h3>Global Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Classes</h3>
<table>
<tr>
<td><a href="#PreviewProcessingThread">PreviewProcessingThread</a></td>
<td>Class implementing a thread to process some text into HTML usable by the previewer view.</td>
</tr><tr>
<td><a href="#Previewer">Previewer</a></td>
<td>Class implementing a previewer widget for HTML, Markdown and ReST files.</td>
</tr><tr>
<td><a href="#_StrikeThroughExtension">_StrikeThroughExtension</a></td>
<td>Class is placed here, because it depends on imported markdown, and markdown import is lazy.</td>
</tr>
</table>
<h3>Functions</h3>
<table>
<tr><td>None</td></tr>
</table>
<hr /><hr />
<a NAME="PreviewProcessingThread" ID="PreviewProcessingThread"></a>
<h2>PreviewProcessingThread</h2>
<p>
    Class implementing a thread to process some text into HTML usable by the
    previewer view.
</p><h3>Signals</h3>
<dl>
<dt>htmlReady(str,str)</dt>
<dd>
emitted with the file name and processed HTML
        to signal the availability of the processed HTML
</dd>
</dl>
<h3>Derived from</h3>
QThread
<h3>Class Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Class Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Methods</h3>
<table>
<tr>
<td><a href="#PreviewProcessingThread.__init__">PreviewProcessingThread</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#PreviewProcessingThread.__convertMarkdown">__convertMarkdown</a></td>
<td>Private method to convert Markdown text into HTML.</td>
</tr><tr>
<td><a href="#PreviewProcessingThread.__convertReST">__convertReST</a></td>
<td>Private method to convert ReST text into HTML.</td>
</tr><tr>
<td><a href="#PreviewProcessingThread.__getHtml">__getHtml</a></td>
<td>Private method to process the given text depending upon the given language.</td>
</tr><tr>
<td><a href="#PreviewProcessingThread.__processSSI">__processSSI</a></td>
<td>Private method to process the given text for SSI statements.</td>
</tr><tr>
<td><a href="#PreviewProcessingThread.process">process</a></td>
<td>Convert the given text to HTML.</td>
</tr><tr>
<td><a href="#PreviewProcessingThread.run">run</a></td>
<td>Thread function to convert the stored data.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="PreviewProcessingThread.__init__" ID="PreviewProcessingThread.__init__"></a>
<h4>PreviewProcessingThread (Constructor)</h4>
<b>PreviewProcessingThread</b>(<i>parent=None</i>)
<p>
        Constructor
</p><dl>
<dt><i>parent</i></dt>
<dd>
reference to the parent object (QObject)
</dd>
</dl><a NAME="PreviewProcessingThread.__convertMarkdown" ID="PreviewProcessingThread.__convertMarkdown"></a>
<h4>PreviewProcessingThread.__convertMarkdown</h4>
<b>__convertMarkdown</b>(<i>text</i>)
<p>
        Private method to convert Markdown text into HTML.
</p><dl>
<dt><i>text</i></dt>
<dd>
text to be processed (string)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
processed HTML (string)
</dd>
</dl><a NAME="PreviewProcessingThread.__convertReST" ID="PreviewProcessingThread.__convertReST"></a>
<h4>PreviewProcessingThread.__convertReST</h4>
<b>__convertReST</b>(<i>text</i>)
<p>
        Private method to convert ReST text into HTML.
</p><dl>
<dt><i>text</i></dt>
<dd>
text to be processed (string)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
processed HTML (string)
</dd>
</dl><a NAME="PreviewProcessingThread.__getHtml" ID="PreviewProcessingThread.__getHtml"></a>
<h4>PreviewProcessingThread.__getHtml</h4>
<b>__getHtml</b>(<i>language, text, ssiEnabled, filePath, rootPath</i>)
<p>
        Private method to process the given text depending upon the given
        language.
</p><dl>
<dt><i>language</i></dt>
<dd>
language of the text (string)
</dd><dt><i>text</i></dt>
<dd>
to be processed (string)
</dd><dt><i>ssiEnabled</i></dt>
<dd>
flag indicating to do some (limited) SSI processing
            (boolean)
</dd><dt><i>filePath</i></dt>
<dd>
file path of the text (string)
</dd><dt><i>rootPath</i></dt>
<dd>
root path to be used for SSI processing (str)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
processed HTML text (string)
</dd>
</dl><a NAME="PreviewProcessingThread.__processSSI" ID="PreviewProcessingThread.__processSSI"></a>
<h4>PreviewProcessingThread.__processSSI</h4>
<b>__processSSI</b>(<i>txt, filename, root</i>)
<p>
        Private method to process the given text for SSI statements.
</p><p>
        Note: Only a limited subset of SSI statements are supported.
</p><dl>
<dt><i>txt</i></dt>
<dd>
text to be processed (string)
</dd><dt><i>filename</i></dt>
<dd>
name of the file associated with the given text
            (string)
</dd><dt><i>root</i></dt>
<dd>
directory of the document root (string)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
processed HTML (string)
</dd>
</dl><a NAME="PreviewProcessingThread.process" ID="PreviewProcessingThread.process"></a>
<h4>PreviewProcessingThread.process</h4>
<b>process</b>(<i>filePath, language, text, ssiEnabled, rootPath</i>)
<p>
        Convert the given text to HTML.
</p><dl>
<dt><i>filePath</i></dt>
<dd>
file path of the text (string)
</dd><dt><i>language</i></dt>
<dd>
language of the text (string)
</dd><dt><i>text</i></dt>
<dd>
text to be processed (string)
</dd><dt><i>ssiEnabled</i></dt>
<dd>
flag indicating to do some (limited) SSI processing
            (boolean)
</dd><dt><i>rootPath</i></dt>
<dd>
root path to be used for SSI processing (str)
</dd>
</dl><a NAME="PreviewProcessingThread.run" ID="PreviewProcessingThread.run"></a>
<h4>PreviewProcessingThread.run</h4>
<b>run</b>(<i></i>)
<p>
        Thread function to convert the stored data.
</p>
<div align="right"><a href="#top">Up</a></div>
<hr /><hr />
<a NAME="Previewer" ID="Previewer"></a>
<h2>Previewer</h2>
<p>
    Class implementing a previewer widget for HTML, Markdown and ReST files.
</p>
<h3>Derived from</h3>
QWidget, Ui_Previewer
<h3>Class Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Class Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Methods</h3>
<table>
<tr>
<td><a href="#Previewer.__init__">Previewer</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#Previewer.__editorChanged">__editorChanged</a></td>
<td>Private slot to handle a change of the current editor.</td>
</tr><tr>
<td><a href="#Previewer.__editorLanguageChanged">__editorLanguageChanged</a></td>
<td>Private slot to handle a change of the current editor's language.</td>
</tr><tr>
<td><a href="#Previewer.__editorTextChanged">__editorTextChanged</a></td>
<td>Private slot to handle changes of an editor's text.</td>
</tr><tr>
<td><a href="#Previewer.__isPreviewable">__isPreviewable</a></td>
<td>Private method to check, if a preview can be shown for the given editor.</td>
</tr><tr>
<td><a href="#Previewer.__previewStateChanged">__previewStateChanged</a></td>
<td>Public slot to toggle the display of the preview.</td>
</tr><tr>
<td><a href="#Previewer.__restoreScrollBarPositions">__restoreScrollBarPositions</a></td>
<td>Private method to restore scroll bar positions for a previewed editor.</td>
</tr><tr>
<td><a href="#Previewer.__runProcessingThread">__runProcessingThread</a></td>
<td>Private slot to schedule the processing of the current editor's text.</td>
</tr><tr>
<td><a href="#Previewer.__saveScrollBarPositions">__saveScrollBarPositions</a></td>
<td>Private method to save scroll bar positions for a previewed editor.</td>
</tr><tr>
<td><a href="#Previewer.__setHtml">__setHtml</a></td>
<td>Private method to set the HTML to the view and restore the scroll bars positions.</td>
</tr><tr>
<td><a href="#Previewer.__setJavaScriptEnabled">__setJavaScriptEnabled</a></td>
<td>Private method to enable/disable JavaScript.</td>
</tr><tr>
<td><a href="#Previewer.__splitterMoved">__splitterMoved</a></td>
<td>Private slot to handle the movement of the embedding splitter's handle.</td>
</tr><tr>
<td><a href="#Previewer.hide">hide</a></td>
<td>Public method to hide the preview widget.</td>
</tr><tr>
<td><a href="#Previewer.on_jsCheckBox_clicked">on_jsCheckBox_clicked</a></td>
<td>Private slot to enable/disable JavaScript.</td>
</tr><tr>
<td><a href="#Previewer.on_previewView_linkClicked">on_previewView_linkClicked</a></td>
<td>Private slot handling the clicking of a link.</td>
</tr><tr>
<td><a href="#Previewer.on_previewView_titleChanged">on_previewView_titleChanged</a></td>
<td>Private slot to handle a change of the title.</td>
</tr><tr>
<td><a href="#Previewer.on_ssiCheckBox_clicked">on_ssiCheckBox_clicked</a></td>
<td>Private slot to enable/disable SSI.</td>
</tr><tr>
<td><a href="#Previewer.show">show</a></td>
<td>Public method to show the preview widget.</td>
</tr><tr>
<td><a href="#Previewer.shutdown">shutdown</a></td>
<td>Public method to perform shutdown actions.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="Previewer.__init__" ID="Previewer.__init__"></a>
<h4>Previewer (Constructor)</h4>
<b>Previewer</b>(<i>viewmanager, splitter, parent=None</i>)
<p>
        Constructor
</p><dl>
<dt><i>viewmanager</i></dt>
<dd>
reference to the viewmanager object (ViewManager)
</dd><dt><i>splitter</i></dt>
<dd>
reference to the embedding splitter (QSplitter)
</dd><dt><i>parent</i></dt>
<dd>
reference to the parent widget (QWidget)
</dd>
</dl><a NAME="Previewer.__editorChanged" ID="Previewer.__editorChanged"></a>
<h4>Previewer.__editorChanged</h4>
<b>__editorChanged</b>(<i>editor</i>)
<p>
        Private slot to handle a change of the current editor.
</p><dl>
<dt><i>editor</i></dt>
<dd>
reference to the editor (Editor)
</dd>
</dl><a NAME="Previewer.__editorLanguageChanged" ID="Previewer.__editorLanguageChanged"></a>
<h4>Previewer.__editorLanguageChanged</h4>
<b>__editorLanguageChanged</b>(<i>editor</i>)
<p>
        Private slot to handle a change of the current editor's language.
</p><dl>
<dt><i>editor</i></dt>
<dd>
reference to the editor (Editor)
</dd>
</dl><a NAME="Previewer.__editorTextChanged" ID="Previewer.__editorTextChanged"></a>
<h4>Previewer.__editorTextChanged</h4>
<b>__editorTextChanged</b>(<i>editor</i>)
<p>
        Private slot to handle changes of an editor's text.
</p><dl>
<dt><i>editor</i></dt>
<dd>
reference to the editor (Editor)
</dd>
</dl><a NAME="Previewer.__isPreviewable" ID="Previewer.__isPreviewable"></a>
<h4>Previewer.__isPreviewable</h4>
<b>__isPreviewable</b>(<i>editor</i>)
<p>
        Private method to check, if a preview can be shown for the given
        editor.
</p><dl>
<dt><i>editor</i></dt>
<dd>
reference to an editor (Editor)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating if a preview can be shown (boolean)
</dd>
</dl><a NAME="Previewer.__previewStateChanged" ID="Previewer.__previewStateChanged"></a>
<h4>Previewer.__previewStateChanged</h4>
<b>__previewStateChanged</b>(<i>on</i>)
<p>
        Public slot to toggle the display of the preview.
</p><dl>
<dt><i>on</i></dt>
<dd>
flag indicating to show a preview (boolean)
</dd>
</dl><a NAME="Previewer.__restoreScrollBarPositions" ID="Previewer.__restoreScrollBarPositions"></a>
<h4>Previewer.__restoreScrollBarPositions</h4>
<b>__restoreScrollBarPositions</b>(<i></i>)
<p>
        Private method to restore scroll bar positions for a previewed editor.
</p><a NAME="Previewer.__runProcessingThread" ID="Previewer.__runProcessingThread"></a>
<h4>Previewer.__runProcessingThread</h4>
<b>__runProcessingThread</b>(<i></i>)
<p>
        Private slot to schedule the processing of the current editor's text.
</p><a NAME="Previewer.__saveScrollBarPositions" ID="Previewer.__saveScrollBarPositions"></a>
<h4>Previewer.__saveScrollBarPositions</h4>
<b>__saveScrollBarPositions</b>(<i></i>)
<p>
        Private method to save scroll bar positions for a previewed editor.
</p><a NAME="Previewer.__setHtml" ID="Previewer.__setHtml"></a>
<h4>Previewer.__setHtml</h4>
<b>__setHtml</b>(<i>filePath, html</i>)
<p>
        Private method to set the HTML to the view and restore the scroll bars
        positions.
</p><dl>
<dt><i>filePath</i></dt>
<dd>
file path of the previewed editor (string)
</dd><dt><i>html</i></dt>
<dd>
processed HTML text ready to be shown (string)
</dd>
</dl><a NAME="Previewer.__setJavaScriptEnabled" ID="Previewer.__setJavaScriptEnabled"></a>
<h4>Previewer.__setJavaScriptEnabled</h4>
<b>__setJavaScriptEnabled</b>(<i>enable</i>)
<p>
        Private method to enable/disable JavaScript.
</p><dl>
<dt><i>enable</i></dt>
<dd>
flag indicating the enable state (boolean)
</dd>
</dl><a NAME="Previewer.__splitterMoved" ID="Previewer.__splitterMoved"></a>
<h4>Previewer.__splitterMoved</h4>
<b>__splitterMoved</b>(<i></i>)
<p>
        Private slot to handle the movement of the embedding splitter's handle.
</p><a NAME="Previewer.hide" ID="Previewer.hide"></a>
<h4>Previewer.hide</h4>
<b>hide</b>(<i></i>)
<p>
        Public method to hide the preview widget.
</p><a NAME="Previewer.on_jsCheckBox_clicked" ID="Previewer.on_jsCheckBox_clicked"></a>
<h4>Previewer.on_jsCheckBox_clicked</h4>
<b>on_jsCheckBox_clicked</b>(<i>checked</i>)
<p>
        Private slot to enable/disable JavaScript.
</p><dl>
<dt><i>checked</i></dt>
<dd>
state of the checkbox (boolean)
</dd>
</dl><a NAME="Previewer.on_previewView_linkClicked" ID="Previewer.on_previewView_linkClicked"></a>
<h4>Previewer.on_previewView_linkClicked</h4>
<b>on_previewView_linkClicked</b>(<i>url</i>)
<p>
        Private slot handling the clicking of a link.
</p><dl>
<dt><i>url</i></dt>
<dd>
url of the clicked link (QUrl)
</dd>
</dl><a NAME="Previewer.on_previewView_titleChanged" ID="Previewer.on_previewView_titleChanged"></a>
<h4>Previewer.on_previewView_titleChanged</h4>
<b>on_previewView_titleChanged</b>(<i>title</i>)
<p>
        Private slot to handle a change of the title.
</p><dl>
<dt><i>title</i></dt>
<dd>
new title (string)
</dd>
</dl><a NAME="Previewer.on_ssiCheckBox_clicked" ID="Previewer.on_ssiCheckBox_clicked"></a>
<h4>Previewer.on_ssiCheckBox_clicked</h4>
<b>on_ssiCheckBox_clicked</b>(<i>checked</i>)
<p>
        Private slot to enable/disable SSI.
</p><dl>
<dt><i>checked</i></dt>
<dd>
state of the checkbox (boolean)
</dd>
</dl><a NAME="Previewer.show" ID="Previewer.show"></a>
<h4>Previewer.show</h4>
<b>show</b>(<i></i>)
<p>
        Public method to show the preview widget.
</p><a NAME="Previewer.shutdown" ID="Previewer.shutdown"></a>
<h4>Previewer.shutdown</h4>
<b>shutdown</b>(<i></i>)
<p>
        Public method to perform shutdown actions.
</p>
<div align="right"><a href="#top">Up</a></div>
<hr /><hr />
<a NAME="_StrikeThroughExtension" ID="_StrikeThroughExtension"></a>
<h2>_StrikeThroughExtension</h2>
<p>
                Class is placed here, because it depends on imported markdown,
                and markdown import is lazy.
</p><p>
                (see http://achinghead.com/
                python-markdown-adding-insert-delete.html this page for
                details)
</p>
<h3>Derived from</h3>
markdown.Extension
<h3>Class Attributes</h3>
<table>
<tr><td>DEL_RE</td></tr>
</table>
<h3>Class Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Methods</h3>
<table>
<tr>
<td><a href="#_StrikeThroughExtension.extendMarkdown">extendMarkdown</a></td>
<td></td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="_StrikeThroughExtension.extendMarkdown" ID="_StrikeThroughExtension.extendMarkdown"></a>
<h4>_StrikeThroughExtension.extendMarkdown</h4>
<b>extendMarkdown</b>(<i>md, md_globals</i>)

<div align="right"><a href="#top">Up</a></div>
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