| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package androidx.ui.material.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.Composable |
| import androidx.compose.memo |
| import androidx.compose.state |
| import androidx.compose.unaryPlus |
| import androidx.ui.core.Text |
| import androidx.ui.core.dp |
| import androidx.ui.foundation.selection.ToggleableState |
| import androidx.ui.graphics.Color |
| import androidx.ui.layout.Column |
| import androidx.ui.layout.Padding |
| import androidx.ui.layout.Row |
| import androidx.ui.material.Checkbox |
| import androidx.ui.material.RadioButton |
| import androidx.ui.material.RadioGroup |
| import androidx.ui.material.Switch |
| import androidx.ui.material.TriStateCheckbox |
| |
| @Sampled |
| @Composable |
| fun TriStateCheckboxSample() { |
| Column { |
| // define dependent checkboxes states |
| val (state, onStateChange) = +state { true } |
| val (state2, onStateChange2) = +state { true } |
| |
| // TriStateCheckbox state reflects state of dependent checkboxes |
| val parentState = +memo(state, state2) { |
| if (state && state2) ToggleableState.On |
| else if (!state && !state2) ToggleableState.Off |
| else ToggleableState.Indeterminate |
| } |
| // click on TriStateCheckbox can set state for dependent checkboxes |
| val onParentClick = { |
| val s = parentState != ToggleableState.On |
| onStateChange(s) |
| onStateChange2(s) |
| } |
| |
| TriStateCheckbox(value = parentState, onClick = onParentClick, color = Color.Black) |
| Padding(left = 10.dp) { |
| Column { |
| Checkbox(state, onStateChange) |
| Checkbox(state2, onStateChange2) |
| } |
| } |
| } |
| } |
| |
| @Sampled |
| @Composable |
| fun CheckboxSample() { |
| val checkedState = +state { true } |
| Checkbox( |
| checked = checkedState.value, |
| onCheckedChange = { checkedState.value = it } |
| ) |
| } |
| |
| @Sampled |
| @Composable |
| fun SwitchSample() { |
| val checkedState = +state { true } |
| Switch( |
| checked = checkedState.value, |
| onCheckedChange = { checkedState.value = it } |
| ) |
| } |
| |
| @Sampled |
| @Composable |
| fun RadioButtonSample() { |
| // we have two radio buttons and only one can be selected |
| // let's emulate binary choice here |
| var enterTheMatrix by +state { true } |
| Row { |
| RadioButton( |
| selected = enterTheMatrix, |
| onSelect = { enterTheMatrix = true }, |
| color = Color.Red |
| ) |
| RadioButton( |
| selected = !enterTheMatrix, |
| onSelect = { enterTheMatrix = false }, |
| color = Color.Blue |
| ) |
| } |
| } |
| |
| @Sampled |
| @Composable |
| fun DefaultRadioGroupSample() { |
| val radioOptions = listOf("Calls", "Missed", "Friends") |
| val (selectedOption, onOptionSelected) = +state { radioOptions[0] } |
| RadioGroup( |
| options = radioOptions, |
| selectedOption = selectedOption, |
| onSelectedChange = onOptionSelected |
| ) |
| } |
| |
| @Sampled |
| @Composable |
| fun CustomRadioGroupSample() { |
| val radioOptions = listOf("Disagree", "Neutral", "Agree") |
| val (selectedOption, onOptionSelected) = +state { radioOptions[0] } |
| |
| RadioGroup { |
| Row { |
| radioOptions.forEach { text -> |
| val selected = text == selectedOption |
| RadioGroupItem( |
| selected = selected, |
| onSelect = { onOptionSelected(text) }) { |
| Padding(padding = 10.dp) { |
| Column { |
| RadioButton( |
| selected = selected, |
| onSelect = { onOptionSelected(text) }) |
| Text(text = text) |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
