.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "11_demos\itom\ui_dynamicLayout\demo_dynamicFormLayout.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_11_demos_itom_ui_dynamicLayout_demo_dynamicFormLayout.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_11_demos_itom_ui_dynamicLayout_demo_dynamicFormLayout.py:

Dynamic form layout
======================

Example for dynamically changing the content of a form layout.

This example shows how new widgets are added or inserted to a form
layout in an user interface, how entire rows are removed or how
the existing widgets in a form layout are requested.

Most functions used in this example are based on special methods
of the form layout (Qt class: ``QFormLayout``), that are made accessible
in itom via the ``uiItem.call('methodName', *args)`` method.

.. GENERATED FROM PYTHON SOURCE LINES 14-165

.. code-block:: Python


    from itomUi import ItomUi
    from itom import ui
    from itom import uiItem


    class DynamicFormLayout(ItomUi):
        """Main class with the functionality of the user interface."""

        def __init__(self):
            """Constructor."""
            # call constructor of ItomUi like it would be the constructor of the class itom.ui:
            ItomUi.__init__(self, "dynamicFormLayout.ui", ui.TYPEWINDOW)

            # the spacing between each item of the layout is a property
            self.layout["spacing"] = 7

            self.gui.comboAddWidget.call("addItems", ui.availableWidgets())

            self._update()

        @property
        def layout(self):
            """The reference to the form layout."""
            return self.gui.formLayout

        @property
        def rowCount(self):
            """Returns number of rows in the form layout."""
            return self.layout.call("rowCount")

        @ItomUi.autoslot("")
        def on_btnAddRowLineEdit_clicked(self):
            """Adds a new row with a string label and
            a line edit widget (class name in Qt: QLineEdit."""
            num = self.rowCount
            name = f"LineEdit_{num+1}"
            objName = name
            self.layout.call("addRow", name, "QLineEdit", objName)
            self._update()

        @ItomUi.autoslot("")
        def on_btnAddRowCheckBox_clicked(self):
            """Adds a new row with a string label and
            a line edit widget (class name in Qt: QCheckBox."""
            num = self.rowCount
            name = f"CheckBox_{num+1}"
            objName = name
            box = self.layout.call("addRow", name, "QCheckBox", objName)
            box["checked"] = True
            self._update()

        @ItomUi.autoslot("")
        def on_btnInsertRowComboBox_clicked(self):
            row, valid = ui.getInt(
                "Row index",
                "At which row should the combo box be inserted?",
                0,
                parent=self.gui,
            )

            if valid:
                name = f"ComboBox_{self.rowCount+1}"
                objName = name
                combo = self.layout.call("insertRow", row, name, "QComboBox", objName)
                combo.call("addItems", ("Option 1", "Option 2", "Option 3"))
                self._update()

        @ItomUi.autoslot("")
        def on_btnSetWidget_clicked(self):
            rowIndex = self.gui.spinAddRowIndex["value"]

            # 0: modify label, 1: modify field, 2: widget spans both columns
            role = self.gui.comboAddRole["currentIndex"]

            className = self.gui.comboAddWidget["currentText"]

            self.layout.call(
                "setItem", rowIndex, role, className, f"item_{rowIndex}_{role}"
            )
            self._update()

        @ItomUi.autoslot("")
        def on_btnRemoveRow_clicked(self):
            row, valid = ui.getInt(
                "Row index",
                "Which row index should be removed?",
                0,
                min=0,
                max=self.rowCount - 1,
                parent=self.gui,
            )

            if valid:
                self.layout.call("removeRow", row)
                self._update()

        @ItomUi.autoslot("")
        def on_btnInfo_clicked(self):
            items = []
            label: uiItem
            field: uiItem

            for r in range(self.rowCount):
                try:
                    label = self.layout.call("itemAtPosition", r, 0)  # 0 stands for label
                    className = label.getClassName()

                    if className == "QLabel":
                        lblStr = label["text"]
                    else:
                        lblStr = str(label)

                except RuntimeError:
                    lblStr = "<no label>"

                try:
                    field = self.layout.call("itemAtPosition", r, 1)  # 1 stands for field
                    className = field.getClassName()

                    if className == "QLineEdit":
                        fieldStr = field["text"]
                    elif className == "QCheckBox":
                        fieldStr = "Check Box"
                    elif className == "QComboBox":
                        fieldStr = field["currentText"]
                    else:
                        fieldStr = str(field)
                except RuntimeError:
                    fieldStr = "<no field>"

                items.append(f"{r + 1}: {lblStr}: {fieldStr}")

            text = (
                f"Form Layout with {self.rowCount} rows:\n"
                + "-----------------------------------------\n\n"
                + "\n".join(items)
            )

            ui.msgInformation("Info", text, parent=self.gui)

        def _update(self):
            self.gui.btnRemoveRow["enabled"] = self.rowCount > 0
            self.gui.lblCaption["text"] = f"Form Layout (Currently {self.rowCount} rows):"


    if __name__ == "__main__":
        # create an object of DynamicFormLayout and shows it
        win1 = DynamicFormLayout()
        win1.gui.show()








.. GENERATED FROM PYTHON SOURCE LINES 167-169

.. image:: ../../_static/demoDynamicFormLayout_1.png
   :width: 75%


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.020 seconds)


.. _sphx_glr_download_11_demos_itom_ui_dynamicLayout_demo_dynamicFormLayout.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: demo_dynamicFormLayout.ipynb <demo_dynamicFormLayout.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: demo_dynamicFormLayout.py <demo_dynamicFormLayout.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: demo_dynamicFormLayout.zip <demo_dynamicFormLayout.zip>`