Documentation/Source/eric5.UI.CompareDialog.html

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<h1>eric5.UI.CompareDialog</h1>
<p>
Module implementing a dialog to compare two files and show the result side by side.
</p>
<h3>Global Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Classes</h3>
<table>
<tr>
<td><a href="#CompareDialog">CompareDialog</a></td>
<td>Class implementing a dialog to compare two files and show the result side by side.</td>
</tr><tr>
<td><a href="#CompareWindow">CompareWindow</a></td>
<td>Main window class for the standalone dialog.</td>
</tr>
</table>
<h3>Functions</h3>
<table>
<tr>
<td><a href="#removeMarkers">removeMarkers</a></td>
<td>Internal function to remove all diff markers.</td>
</tr><tr>
<td><a href="#sbsdiff">sbsdiff</a></td>
<td>Compare two sequences of lines; generate the delta for display side by side.</td>
</tr>
</table>
<hr /><hr />
<a NAME="CompareDialog" ID="CompareDialog"></a>
<h2>CompareDialog</h2>
<p>
    Class implementing a dialog to compare two files and show the result side by side.
</p>
<h3>Derived from</h3>
QWidget, Ui_CompareDialog
<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="#CompareDialog.__init__">CompareDialog</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#CompareDialog.__appendText">__appendText</a></td>
<td>Private method to append text to the end of the contents pane.</td>
</tr><tr>
<td><a href="#CompareDialog.__compare">__compare</a></td>
<td>Private method to compare two lists of text.</td>
</tr><tr>
<td><a href="#CompareDialog.__fileChanged">__fileChanged</a></td>
<td>Private slot to enable/disable the Compare button.</td>
</tr><tr>
<td><a href="#CompareDialog.__moveTextToCurrentDiffPos">__moveTextToCurrentDiffPos</a></td>
<td>Private slot to move the text display to the current diff position.</td>
</tr><tr>
<td><a href="#CompareDialog.__scrollBarMoved">__scrollBarMoved</a></td>
<td>Private slot to enable the buttons and set the current diff position depending on scrollbar position.</td>
</tr><tr>
<td><a href="#CompareDialog.__selectFile">__selectFile</a></td>
<td>Private slot to display a file selection dialog.</td>
</tr><tr>
<td><a href="#CompareDialog.compare">compare</a></td>
<td>Public method to compare two lists of text.</td>
</tr><tr>
<td><a href="#CompareDialog.on_buttonBox_clicked">on_buttonBox_clicked</a></td>
<td>Private slot called by a button of the button box clicked.</td>
</tr><tr>
<td><a href="#CompareDialog.on_diffButton_clicked">on_diffButton_clicked</a></td>
<td>Private slot to handle the Compare button press.</td>
</tr><tr>
<td><a href="#CompareDialog.on_downButton_clicked">on_downButton_clicked</a></td>
<td>Private slot to go to the next difference.</td>
</tr><tr>
<td><a href="#CompareDialog.on_file1Button_clicked">on_file1Button_clicked</a></td>
<td>Private slot to handle the file 1 file selection button press.</td>
</tr><tr>
<td><a href="#CompareDialog.on_file2Button_clicked">on_file2Button_clicked</a></td>
<td>Private slot to handle the file 2 file selection button press.</td>
</tr><tr>
<td><a href="#CompareDialog.on_firstButton_clicked">on_firstButton_clicked</a></td>
<td>Private slot to go to the first difference.</td>
</tr><tr>
<td><a href="#CompareDialog.on_lastButton_clicked">on_lastButton_clicked</a></td>
<td>Private slot to go to the last difference.</td>
</tr><tr>
<td><a href="#CompareDialog.on_synchronizeCheckBox_toggled">on_synchronizeCheckBox_toggled</a></td>
<td>Private slot to connect or disconnect the scrollbars of the displays.</td>
</tr><tr>
<td><a href="#CompareDialog.on_upButton_clicked">on_upButton_clicked</a></td>
<td>Private slot to go to the previous difference.</td>
</tr><tr>
<td><a href="#CompareDialog.show">show</a></td>
<td>Public slot to show the dialog.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="CompareDialog.__init__" ID="CompareDialog.__init__"></a>
<h4>CompareDialog (Constructor)</h4>
<b>CompareDialog</b>(<i>files=[], parent=None</i>)
<p>
        Constructor
</p><dl>
<dt><i>files</i></dt>
<dd>
list of files to compare and their label
            (list of two tuples of two strings)
</dd><dt><i>parent</i></dt>
<dd>
parent widget (QWidget)
</dd>
</dl><a NAME="CompareDialog.__appendText" ID="CompareDialog.__appendText"></a>
<h4>CompareDialog.__appendText</h4>
<b>__appendText</b>(<i>pane, linenumber, line, format, interLine=False</i>)
<p>
        Private method to append text to the end of the contents pane.
</p><dl>
<dt><i>pane</i></dt>
<dd>
text edit widget to append text to (QTextedit)
</dd><dt><i>linenumber</i></dt>
<dd>
number of line to insert (string)
</dd><dt><i>line</i></dt>
<dd>
text to insert (string)
</dd><dt><i>format</i></dt>
<dd>
text format to be used (QTextCharFormat)
</dd><dt><i>interLine</i></dt>
<dd>
flag indicating interline changes (boolean)
</dd>
</dl><a NAME="CompareDialog.__compare" ID="CompareDialog.__compare"></a>
<h4>CompareDialog.__compare</h4>
<b>__compare</b>(<i>lines1, lines2</i>)
<p>
        Private method to compare two lists of text.
</p><dl>
<dt><i>lines1</i></dt>
<dd>
text to compare against (list of strings)
</dd><dt><i>lines2</i></dt>
<dd>
text to compare (list of strings)
</dd>
</dl><a NAME="CompareDialog.__fileChanged" ID="CompareDialog.__fileChanged"></a>
<h4>CompareDialog.__fileChanged</h4>
<b>__fileChanged</b>(<i></i>)
<p>
        Private slot to enable/disable the Compare button.
</p><a NAME="CompareDialog.__moveTextToCurrentDiffPos" ID="CompareDialog.__moveTextToCurrentDiffPos"></a>
<h4>CompareDialog.__moveTextToCurrentDiffPos</h4>
<b>__moveTextToCurrentDiffPos</b>(<i></i>)
<p>
        Private slot to move the text display to the current diff position.
</p><a NAME="CompareDialog.__scrollBarMoved" ID="CompareDialog.__scrollBarMoved"></a>
<h4>CompareDialog.__scrollBarMoved</h4>
<b>__scrollBarMoved</b>(<i>value</i>)
<p>
        Private slot to enable the buttons and set the current diff position
        depending on scrollbar position.
</p><dl>
<dt><i>value</i></dt>
<dd>
scrollbar position (integer)
</dd>
</dl><a NAME="CompareDialog.__selectFile" ID="CompareDialog.__selectFile"></a>
<h4>CompareDialog.__selectFile</h4>
<b>__selectFile</b>(<i>lineEdit</i>)
<p>
        Private slot to display a file selection dialog.
</p><dl>
<dt><i>lineEdit</i></dt>
<dd>
field for the display of the selected filename
                (QLineEdit)
</dd>
</dl><a NAME="CompareDialog.compare" ID="CompareDialog.compare"></a>
<h4>CompareDialog.compare</h4>
<b>compare</b>(<i>lines1, lines2, name1="", name2=""</i>)
<p>
        Public method to compare two lists of text.
</p><dl>
<dt><i>lines1</i></dt>
<dd>
text to compare against (string or list of strings)
</dd><dt><i>lines2</i></dt>
<dd>
text to compare (string or list of strings)
</dd><dt><i>name1=</i></dt>
<dd>
name to be shown for the first text (string)
</dd><dt><i>name2=</i></dt>
<dd>
name to be shown for the second text (string)
</dd>
</dl><a NAME="CompareDialog.on_buttonBox_clicked" ID="CompareDialog.on_buttonBox_clicked"></a>
<h4>CompareDialog.on_buttonBox_clicked</h4>
<b>on_buttonBox_clicked</b>(<i>button</i>)
<p>
        Private slot called by a button of the button box clicked.
</p><dl>
<dt><i>button</i></dt>
<dd>
button that was clicked (QAbstractButton)
</dd>
</dl><a NAME="CompareDialog.on_diffButton_clicked" ID="CompareDialog.on_diffButton_clicked"></a>
<h4>CompareDialog.on_diffButton_clicked</h4>
<b>on_diffButton_clicked</b>(<i></i>)
<p>
        Private slot to handle the Compare button press.
</p><a NAME="CompareDialog.on_downButton_clicked" ID="CompareDialog.on_downButton_clicked"></a>
<h4>CompareDialog.on_downButton_clicked</h4>
<b>on_downButton_clicked</b>(<i></i>)
<p>
        Private slot to go to the next difference.
</p><a NAME="CompareDialog.on_file1Button_clicked" ID="CompareDialog.on_file1Button_clicked"></a>
<h4>CompareDialog.on_file1Button_clicked</h4>
<b>on_file1Button_clicked</b>(<i></i>)
<p>
        Private slot to handle the file 1 file selection button press.
</p><a NAME="CompareDialog.on_file2Button_clicked" ID="CompareDialog.on_file2Button_clicked"></a>
<h4>CompareDialog.on_file2Button_clicked</h4>
<b>on_file2Button_clicked</b>(<i></i>)
<p>
        Private slot to handle the file 2 file selection button press.
</p><a NAME="CompareDialog.on_firstButton_clicked" ID="CompareDialog.on_firstButton_clicked"></a>
<h4>CompareDialog.on_firstButton_clicked</h4>
<b>on_firstButton_clicked</b>(<i></i>)
<p>
        Private slot to go to the first difference.
</p><a NAME="CompareDialog.on_lastButton_clicked" ID="CompareDialog.on_lastButton_clicked"></a>
<h4>CompareDialog.on_lastButton_clicked</h4>
<b>on_lastButton_clicked</b>(<i></i>)
<p>
        Private slot to go to the last difference.
</p><a NAME="CompareDialog.on_synchronizeCheckBox_toggled" ID="CompareDialog.on_synchronizeCheckBox_toggled"></a>
<h4>CompareDialog.on_synchronizeCheckBox_toggled</h4>
<b>on_synchronizeCheckBox_toggled</b>(<i>sync</i>)
<p>
        Private slot to connect or disconnect the scrollbars of the displays.
</p><dl>
<dt><i>sync</i></dt>
<dd>
flag indicating synchronisation status (boolean)
</dd>
</dl><a NAME="CompareDialog.on_upButton_clicked" ID="CompareDialog.on_upButton_clicked"></a>
<h4>CompareDialog.on_upButton_clicked</h4>
<b>on_upButton_clicked</b>(<i></i>)
<p>
        Private slot to go to the previous difference.
</p><a NAME="CompareDialog.show" ID="CompareDialog.show"></a>
<h4>CompareDialog.show</h4>
<b>show</b>(<i>filename=None</i>)
<p>
        Public slot to show the dialog.
</p><dl>
<dt><i>filename</i></dt>
<dd>
name of a file to use as the first file (string)
</dd>
</dl>
<div align="right"><a href="#top">Up</a></div>
<hr /><hr />
<a NAME="CompareWindow" ID="CompareWindow"></a>
<h2>CompareWindow</h2>
<p>
    Main window class for the standalone dialog.
</p>
<h3>Derived from</h3>
E5MainWindow
<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="#CompareWindow.__init__">CompareWindow</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#CompareWindow.eventFilter">eventFilter</a></td>
<td>Public method to filter events.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="CompareWindow.__init__" ID="CompareWindow.__init__"></a>
<h4>CompareWindow (Constructor)</h4>
<b>CompareWindow</b>(<i>files=[], parent=None</i>)
<p>
        Constructor
</p><dl>
<dt><i>files</i></dt>
<dd>
list of files to compare and their label
            (list of two tuples of two strings)
</dd><dt><i>parent</i></dt>
<dd>
reference to the parent widget (QWidget)
</dd>
</dl><a NAME="CompareWindow.eventFilter" ID="CompareWindow.eventFilter"></a>
<h4>CompareWindow.eventFilter</h4>
<b>eventFilter</b>(<i>obj, event</i>)
<p>
        Public method to filter events.
</p><dl>
<dt><i>obj</i></dt>
<dd>
reference to the object the event is meant for (QObject)
</dd><dt><i>event</i></dt>
<dd>
reference to the event object (QEvent)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating, whether the event was handled (boolean)
</dd>
</dl>
<div align="right"><a href="#top">Up</a></div>
<hr /><hr />
<a NAME="removeMarkers" ID="removeMarkers"></a>
<h2>removeMarkers</h2>
<b>removeMarkers</b>(<i>line</i>)
<p>
        Internal function to remove all diff markers.
</p><dl>
<dt><i>line</i></dt>
<dd>
line to work on (string)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
line without diff markers (string)
</dd>
</dl>
<div align="right"><a href="#top">Up</a></div>
<hr /><hr />
<a NAME="sbsdiff" ID="sbsdiff"></a>
<h2>sbsdiff</h2>
<b>sbsdiff</b>(<i>a, b, linenumberwidth=4</i>)
<p>
    Compare two sequences of lines; generate the delta for display side by side.
</p><dl>
<dt><i>a</i></dt>
<dd>
first sequence of lines (list of strings)
</dd><dt><i>b</i></dt>
<dd>
second sequence of lines (list of strings)
</dd><dt><i>linenumberwidth</i></dt>
<dd>
width (in characters) of the linenumbers (integer)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
a generator yielding tuples of differences. The tuple is composed
        of strings as follows.
        <ul>
            <li>opcode -- one of e, d, i, r for equal, delete, insert, replace</li>
            <li>lineno a -- linenumber of sequence a</li>
            <li>line a -- line of sequence a</li>
            <li>lineno b -- linenumber of sequence b</li>
            <li>line b -- line of sequence b</li>
        </ul>
</dd>
</dl>
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