#!/usr/bin/env python
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"""This script is a simple example of how to use the periodic table widgets,
select elements and connect signals.
"""
import sys
from silx.gui import qt
from silx.gui.widgets import PeriodicTable

a = qt.QApplication(sys.argv)
sys.excepthook = qt.exceptionHandler
a.lastWindowClosed.connect(a.quit)

w = qt.QTabWidget()

pt = PeriodicTable.PeriodicTable(w, selectable=True)
pc = PeriodicTable.PeriodicCombo(w)
pl = PeriodicTable.PeriodicList(w)

pt.setSelection(["Fe", "Si", "Mt"])
pl.setSelectedElements(["H", "Be", "F"])
pc.setSelection("Li")


def change_list(items):
    print("New list selection:", [item.symbol for item in items])


def change_combo(item):
    print("New combo selection:", item.symbol)


def click_table(item):
    print("New table click: %s (%s)" % (item.name, item.subcategory))


def change_table(items):
    print("New table selection:", [item.symbol for item in items])


pt.sigElementClicked.connect(click_table)
pt.sigSelectionChanged.connect(change_table)
pl.sigSelectionChanged.connect(change_list)
pc.sigSelectionChanged.connect(change_combo)

# move combo into container widget to preventing it from filling
# the tab inside TabWidget
comboContainer = qt.QWidget(w)
comboContainer.setLayout(qt.QVBoxLayout())
comboContainer.layout().addWidget(pc)

w.addTab(pt, "PeriodicTable")
w.addTab(pl, "PeriodicList")
w.addTab(comboContainer, "PeriodicCombo")
w.show()

a.exec()
