NodeTree Class
The Node Tree is used to list nodes on a specified routing More...
| Header: | #include <NodeTree> |
Public Types
| enum | SendMethod { onSelectionChanged, onSlotOnly } |
Properties
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Public Functions
| NodeTree(QWidget *parent = nullptr) | |
| QString | cdpTargetRouting() const |
| QStringList | columns() const |
| QStringList | columnsPrecision() const |
| QStringList | columnsToHide() const |
| QStringList | columnsWidth() const |
| QStringList | modelFilter() const |
| QString | sendColumn() const |
| bool | sendEscapingEnabled() const |
| SendMethod | sendMethod() const |
| virtual void | setColumns(const QStringList &columns) |
| virtual void | setColumnsPrecision(const QStringList &columns) |
| virtual void | setColumnsToHide(const QStringList &columns) |
| virtual void | setColumnsWidth(const QStringList &columns) |
| virtual void | setModelFilter(const QStringList &modelTypes) |
| void | setSendColumn(QString column) |
| void | setSendEscapingEnabled(bool enabled) |
| void | setSendMethod(SendMethod method) |
Public Slots
| virtual void | sendSelections() |
| virtual void | setCdpTargetRouting(const QString &routing) |
| virtual void | setFilterString(const QString &filter) |
| void | updateColumnsWidth() |
Signals
| void | selectedNodeChanged(QString) |
| void | selectedNodeChanged(QStringList) |
| void | selectedNodeChangedEncoded(QString) |
| void | selectedNodeChangedEncoded(QStringList) |
| void | selectedNodeFullPathChanged(QString) |
Protected Functions
| void | createModel() |
| void | selectionChanged(const QItemSelection &selected, const QItemSelection &deselected) override |
Detailed Description
The Node Tree is used to list nodes on a specified routing
The target routing is configured in the cdpTargetRouting property and nodes are filtered based on the model types specified in the modelFilter property.
The data to show for each node is configured in the columns property.
The widget supports selection and emitting one or more items using widget signals as described in the below list. Use the selectionMode property to enable or disable the selection of multiple items by setting it to SingleSelection or MultiSelection. The sendMethod property decides whether to emit the selections directly or to use the sendSelections() slot. The signals emit the node name by default, but this can be changed using the property named sendColumn.
| Widget Signal | Description |
|---|---|
| selectedNodeChanged(QString) | The text/column of the selected items, using ";" as separator when there are more than one item. Editing the sendColumn property will enable sending a different column than Name. |
| selectedNodeFullPathChanged(QString) | This is identical to selectedNodeChanged, but will add cdpTargetRouting + "." as prefix on each item. |
The widget contains slots for setting target routing, item filtering, and triggering the selection signals to emit as described below.
| Widget Slot | Description |
|---|---|
| sendSelections() | This slot triggers the selection signals to get emitted. |
| setCdpTargetRouting(QString) | This slot can be used to switch the target routing in runtime. |
| setFilterString(QString) | This slot is usually connected from a text input widget, like the Line Edit, to filter what items to show in the list. Useful when there are lots of items and hard to locate the correct one. |
The widget is styled by the main window style sheet. This can be overridden in the widget styleSheet property or by using a CDPBaseContainer configured with CSS styling. Using the latter method and having separate CSS files for different themes will allow correct styling when themes are switched in runtime. The below snippet shows an example of CSS styling.
QHeaderView::section { background-color: #EDF0F3; border: 0px solid #6c6c6c; color: #48505A; border-bottom: 1px solid #d4d8dc; } QTableView { background: #EDF0F3; alternate-background-color: #F2F4F6; color: #48505A; border: 0px solid #EDF0F3; selection-color: #ffffff; selection-background-color: #3399CC; }
Note: The searching of nodes was added for native GUI in CDP 4.12
Property Documentation
cdpTargetRouting : QString
This property holds the target routing to search for nodes.
Access functions:
| QString | cdpTargetRouting() const |
| virtual void | setCdpTargetRouting(const QString &routing) |
columns : QStringList
This property holds the node data objects to show as columns.
Access functions:
| QStringList | columns() const |
| virtual void | setColumns(const QStringList &columns) |
columnsPrecision : QStringList
This property holds a list of column names along with the number of decimals they should use when displaying numeric data The format of the list item is "Name=X", where "Name" is the column name and "X" is the number of decimals.
Access functions:
| QStringList | columnsPrecision() const |
| virtual void | setColumnsPrecision(const QStringList &columns) |
columnsToHide : QStringList
This property holds a list of columns to hide if configured in the columns property The property is useful if you want to emit column data of a selected row without showing the actual column.
Access functions:
| QStringList | columnsToHide() const |
| virtual void | setColumnsToHide(const QStringList &columns) |
columnsWidth : QStringList
This property holds a list of column names along with the initial width the column should have in the table The format of the list item is "Name=X", where "Name" is the column name and "X" is the column pixel width.
Access functions:
| QStringList | columnsWidth() const |
| virtual void | setColumnsWidth(const QStringList &columns) |
modelFilter : QStringList
This property holds a list of model types that the table accepts and shows.
Access functions:
| QStringList | modelFilter() const |
| virtual void | setModelFilter(const QStringList &modelTypes) |
sendColumn : QString
This property holds the column to emit in the selection signals.
Access functions:
| QString | sendColumn() const |
| void | setSendColumn(QString column) |
sendEscapingEnabled : bool
This property holds whether or not to escape quotations in the data emitted using the node selection signals.
Access functions:
| bool | sendEscapingEnabled() const |
| void | setSendEscapingEnabled(bool enabled) |
sendMethod : SendMethod
This property holds whether to emit selections directly or trigger this by the slot named sendSelections.
Access functions:
| SendMethod | sendMethod() const |
| void | setSendMethod(SendMethod method) |
Member Function Documentation
NodeTree::NodeTree(QWidget *parent = nullptr)
Default constructs an instance of NodeTree.
[protected] void NodeTree::createModel()
[signal] void NodeTree::selectedNodeChanged(QString)
Note: Signal selectedNodeChanged is overloaded in this class. To connect to this one using the function pointer syntax, you must specify the signal type in a static cast, as shown in this example:
connect(nodeTree, static_cast<void(NodeTree::*)(QString)>(&NodeTree::selectedNodeChanged), [=](QString ){ /* ... */ });
[signal] void NodeTree::selectedNodeChanged(QStringList)
Note: Signal selectedNodeChanged is overloaded in this class. To connect to this one using the function pointer syntax, you must specify the signal type in a static cast, as shown in this example:
connect(nodeTree, static_cast<void(NodeTree::*)(QStringList)>(&NodeTree::selectedNodeChanged), [=](QStringList ){ /* ... */ });
[signal] void NodeTree::selectedNodeChangedEncoded(QString)
Note: Signal selectedNodeChangedEncoded is overloaded in this class. To connect to this one using the function pointer syntax, you must specify the signal type in a static cast, as shown in this example:
connect(nodeTree, static_cast<void(NodeTree::*)(QString)>(&NodeTree::selectedNodeChangedEncoded), [=](QString ){ /* ... */ });
[signal] void NodeTree::selectedNodeChangedEncoded(QStringList)
Note: Signal selectedNodeChangedEncoded is overloaded in this class. To connect to this one using the function pointer syntax, you must specify the signal type in a static cast, as shown in this example:
connect(nodeTree, static_cast<void(NodeTree::*)(QStringList)>(&NodeTree::selectedNodeChangedEncoded), [=](QStringList ){ /* ... */ });
[signal] void NodeTree::selectedNodeFullPathChanged(QString)
[protected] void NodeTree::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
[virtual slot] void NodeTree::sendSelections()
[virtual slot] void NodeTree::setFilterString(const QString &filter)
[slot] void NodeTree::updateColumnsWidth()
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