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linguist/samples/Golo/swing-actionlistener.golo
2014-09-17 13:59:02 +02:00

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# Copyright 2012-2014 Institut National des Sciences Appliquées de Lyon (INSA-Lyon)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
module samples.SwingActionListener
import java.awt.event
import javax.swing
import javax.swing.WindowConstants
local function listener = |handler| -> asInterfaceInstance(ActionListener.class, handler)
function main = |args| {
let frame = JFrame("Action listeners")
frame: setDefaultCloseOperation(EXIT_ON_CLOSE())
let button = JButton("Click me!")
button: setFont(button: getFont(): deriveFont(96.0_F))
# Using a helper function
button: addActionListener(listener(|event| -> println("Clicked!")))
# Using a standard augmentation: MethodHandle::to(Class)
button: addActionListener((|event| -> println("[click]")): to(ActionListener.class))
# Straight closure passing
button: addActionListener(|event| -> println("( )"))
frame: getContentPane(): add(button)
frame: pack()
frame: setVisible(true)
}