Documentation/Source/eric5.Helpviewer.History.HistoryTreeModel.html

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<h1>eric5.Helpviewer.History.HistoryTreeModel</h1>
<p>
Module implementing the history tree model.
</p>
<h3>Global Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Classes</h3>
<table>
<tr>
<td><a href="#HistoryTreeModel">HistoryTreeModel</a></td>
<td>Class implementing the history tree model.</td>
</tr>
</table>
<h3>Functions</h3>
<table>
<tr><td>None</td></tr>
</table>
<hr /><hr />
<a NAME="HistoryTreeModel" ID="HistoryTreeModel"></a>
<h2>HistoryTreeModel</h2>
<p>
    Class implementing the history tree model.
</p>
<h3>Derived from</h3>
QAbstractProxyModel
<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="#HistoryTreeModel.__init__">HistoryTreeModel</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#HistoryTreeModel.__sourceDateRow">__sourceDateRow</a></td>
<td>Private method to translate the top level date row into the offset where that date starts.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.__sourceReset">__sourceReset</a></td>
<td>Private slot to handle a reset of the source model.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.__sourceRowsInserted">__sourceRowsInserted</a></td>
<td>Private slot to handle the insertion of data in the source model.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.__sourceRowsRemoved">__sourceRowsRemoved</a></td>
<td>Private slot to handle the removal of data in the source model.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.columnCount">columnCount</a></td>
<td>Public method to get the number of columns.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.data">data</a></td>
<td>Public method to get data from the model.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.flags">flags</a></td>
<td>Public method to get the item flags.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.hasChildren">hasChildren</a></td>
<td>Public method to check, if an entry has some children.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.headerData">headerData</a></td>
<td>Public method to get the header data.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.index">index</a></td>
<td>Public method to create an index.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.mapFromSource">mapFromSource</a></td>
<td>Public method to map an index to the proxy model index.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.mapToSource">mapToSource</a></td>
<td>Public method to map an index to the source model index.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.parent">parent</a></td>
<td>Public method to get the parent index.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.removeRows">removeRows</a></td>
<td>Public method to remove entries from the model.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.rowCount">rowCount</a></td>
<td>Public method to determine the number of rows.</td>
</tr><tr>
<td><a href="#HistoryTreeModel.setSourceModel">setSourceModel</a></td>
<td>Public method to set the source model.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="HistoryTreeModel.__init__" ID="HistoryTreeModel.__init__"></a>
<h4>HistoryTreeModel (Constructor)</h4>
<b>HistoryTreeModel</b>(<i>sourceModel, parent=None</i>)
<p>
        Constructor
</p><dl>
<dt><i>sourceModel</i></dt>
<dd>
reference to the source model (QAbstractItemModel)
</dd><dt><i>parent</i></dt>
<dd>
reference to the parent object (QObject)
</dd>
</dl><a NAME="HistoryTreeModel.__sourceDateRow" ID="HistoryTreeModel.__sourceDateRow"></a>
<h4>HistoryTreeModel.__sourceDateRow</h4>
<b>__sourceDateRow</b>(<i>row</i>)
<p>
        Private method to translate the top level date row into the offset
        where that date starts.
</p><dl>
<dt><i>row</i></dt>
<dd>
row number of the date (integer)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
offset where that date starts (integer)
</dd>
</dl><a NAME="HistoryTreeModel.__sourceReset" ID="HistoryTreeModel.__sourceReset"></a>
<h4>HistoryTreeModel.__sourceReset</h4>
<b>__sourceReset</b>(<i></i>)
<p>
        Private slot to handle a reset of the source model.
</p><a NAME="HistoryTreeModel.__sourceRowsInserted" ID="HistoryTreeModel.__sourceRowsInserted"></a>
<h4>HistoryTreeModel.__sourceRowsInserted</h4>
<b>__sourceRowsInserted</b>(<i>parent, start, end</i>)
<p>
        Private slot to handle the insertion of data in the source model.
</p><dl>
<dt><i>parent</i></dt>
<dd>
reference to the parent index (QModelIndex)
</dd><dt><i>start</i></dt>
<dd>
start row (integer)
</dd><dt><i>end</i></dt>
<dd>
end row (integer)
</dd>
</dl><a NAME="HistoryTreeModel.__sourceRowsRemoved" ID="HistoryTreeModel.__sourceRowsRemoved"></a>
<h4>HistoryTreeModel.__sourceRowsRemoved</h4>
<b>__sourceRowsRemoved</b>(<i>parent, start, end</i>)
<p>
        Private slot to handle the removal of data in the source model.
</p><dl>
<dt><i>parent</i></dt>
<dd>
reference to the parent index (QModelIndex)
</dd><dt><i>start</i></dt>
<dd>
start row (integer)
</dd><dt><i>end</i></dt>
<dd>
end row (integer)
</dd>
</dl><a NAME="HistoryTreeModel.columnCount" ID="HistoryTreeModel.columnCount"></a>
<h4>HistoryTreeModel.columnCount</h4>
<b>columnCount</b>(<i>parent=QModelIndex()</i>)
<p>
        Public method to get the number of columns.
</p><dl>
<dt><i>parent</i></dt>
<dd>
index of parent (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
number of columns (integer)
</dd>
</dl><a NAME="HistoryTreeModel.data" ID="HistoryTreeModel.data"></a>
<h4>HistoryTreeModel.data</h4>
<b>data</b>(<i>index, role=Qt.DisplayRole</i>)
<p>
        Public method to get data from the model.
</p><dl>
<dt><i>index</i></dt>
<dd>
index of history entry to get data for (QModelIndex)
</dd><dt><i>role</i></dt>
<dd>
data role (integer)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
history entry data
</dd>
</dl><a NAME="HistoryTreeModel.flags" ID="HistoryTreeModel.flags"></a>
<h4>HistoryTreeModel.flags</h4>
<b>flags</b>(<i>index</i>)
<p>
        Public method to get the item flags.
</p><dl>
<dt><i>index</i></dt>
<dd>
index of the item (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flags (Qt.ItemFlags)
</dd>
</dl><a NAME="HistoryTreeModel.hasChildren" ID="HistoryTreeModel.hasChildren"></a>
<h4>HistoryTreeModel.hasChildren</h4>
<b>hasChildren</b>(<i>parent=QModelIndex()</i>)
<p>
        Public method to check, if an entry has some children.
</p><dl>
<dt><i>parent</i></dt>
<dd>
index of the entry to check (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating the presence of children (boolean)
</dd>
</dl><a NAME="HistoryTreeModel.headerData" ID="HistoryTreeModel.headerData"></a>
<h4>HistoryTreeModel.headerData</h4>
<b>headerData</b>(<i>section, orientation, role=Qt.DisplayRole</i>)
<p>
        Public method to get the header data.
</p><dl>
<dt><i>section</i></dt>
<dd>
section number (integer)
</dd><dt><i>orientation</i></dt>
<dd>
header orientation (Qt.Orientation)
</dd><dt><i>role</i></dt>
<dd>
data role (integer)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
header data
</dd>
</dl><a NAME="HistoryTreeModel.index" ID="HistoryTreeModel.index"></a>
<h4>HistoryTreeModel.index</h4>
<b>index</b>(<i>row, column, parent=QModelIndex()</i>)
<p>
        Public method to create an index.
</p><dl>
<dt><i>row</i></dt>
<dd>
row number for the index (integer)
</dd><dt><i>column</i></dt>
<dd>
column number for the index (integer)
</dd><dt><i>parent</i></dt>
<dd>
index of the parent item (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
requested index (QModelIndex)
</dd>
</dl><a NAME="HistoryTreeModel.mapFromSource" ID="HistoryTreeModel.mapFromSource"></a>
<h4>HistoryTreeModel.mapFromSource</h4>
<b>mapFromSource</b>(<i>sourceIndex</i>)
<p>
        Public method to map an index to the proxy model index.
</p><dl>
<dt><i>sourceIndex</i></dt>
<dd>
reference to a source model index (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
proxy model index (QModelIndex)
</dd>
</dl><a NAME="HistoryTreeModel.mapToSource" ID="HistoryTreeModel.mapToSource"></a>
<h4>HistoryTreeModel.mapToSource</h4>
<b>mapToSource</b>(<i>proxyIndex</i>)
<p>
        Public method to map an index to the source model index.
</p><dl>
<dt><i>proxyIndex</i></dt>
<dd>
reference to a proxy model index (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
source model index (QModelIndex)
</dd>
</dl><a NAME="HistoryTreeModel.parent" ID="HistoryTreeModel.parent"></a>
<h4>HistoryTreeModel.parent</h4>
<b>parent</b>(<i>index</i>)
<p>
        Public method to get the parent index.
</p><dl>
<dt><i>index</i></dt>
<dd>
index of item to get parent (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
index of parent (QModelIndex)
</dd>
</dl><a NAME="HistoryTreeModel.removeRows" ID="HistoryTreeModel.removeRows"></a>
<h4>HistoryTreeModel.removeRows</h4>
<b>removeRows</b>(<i>row, count, parent=QModelIndex()</i>)
<p>
        Public method to remove entries from the model.
</p><dl>
<dt><i>row</i></dt>
<dd>
row of the first entry to remove (integer)
</dd><dt><i>count</i></dt>
<dd>
number of entries to remove (integer)
</dd><dt><i>parent</i></dt>
<dd>
index of the parent entry (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating successful removal (boolean)
</dd>
</dl><a NAME="HistoryTreeModel.rowCount" ID="HistoryTreeModel.rowCount"></a>
<h4>HistoryTreeModel.rowCount</h4>
<b>rowCount</b>(<i>parent=QModelIndex()</i>)
<p>
        Public method to determine the number of rows.
</p><dl>
<dt><i>parent</i></dt>
<dd>
index of parent (QModelIndex)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
number of rows (integer)
</dd>
</dl><a NAME="HistoryTreeModel.setSourceModel" ID="HistoryTreeModel.setSourceModel"></a>
<h4>HistoryTreeModel.setSourceModel</h4>
<b>setSourceModel</b>(<i>sourceModel</i>)
<p>
        Public method to set the source model.
</p><dl>
<dt><i>sourceModel</i></dt>
<dd>
reference to the source model (QAbstractItemModel)
</dd>
</dl>
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