Convert the views and data classes to Kotlin. https://redmine.stoutner.com/issues/744

[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / views / CheckedLinearLayout.kt

diff --git a/app/src/main/java/com/stoutner/privacybrowser/views/CheckedLinearLayout.kt b/app/src/main/java/com/stoutner/privacybrowser/views/CheckedLinearLayout.kt
new file mode 100644 (file)
index 0000000..bf467d2
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+++ b/app/src/main/java/com/stoutner/privacybrowser/views/CheckedLinearLayout.kt
@@ -0,0 +1,112 @@
+/*
+ * Copyright © 2019,2021 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * This file is a modified version of <https://android.googlesource.com/platform/packages/apps/Camera/+/master/src/com/android/camera/ui/CheckedLinearLayout.java>.
+ *
+ * The original licensing information is below.
+ *
+ * Copyright (C) 2012 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 com.stoutner.privacybrowser.views
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.Checkable
+import android.widget.LinearLayout
+
+// Define the class constants.
+
+class CheckedLinearLayout : LinearLayout, Checkable {
+    // Define the class variables.
+    private var isCurrentlyChecked = false
+    private val checkedStateSet = intArrayOf(android.R.attr.state_checked)
+
+    // The constructors.
+    constructor(context: Context) : super(context)
+
+    constructor(context: Context, attributeSet: AttributeSet?) : super(context, attributeSet)
+
+    constructor(context: Context, attributeSet: AttributeSet?, defaultStyleAttribute: Int) : super(context, attributeSet, defaultStyleAttribute)
+
+    // This constructor can only be added once the minimum API >= 21.
+    // constructor(context: Context, attributeSet: AttributeSet?, defaultStyleAttribute: Int, defaultStyleResource: Int) : super(context, attributeSet, defaultStyleAttribute, defaultStyleResource)
+
+    override fun isChecked(): Boolean {
+        // Return the checked status.
+        return isCurrentlyChecked
+    }
+
+    override fun setChecked(checked: Boolean) {
+        // Only process the command if a change is requested.
+        if (isCurrentlyChecked != checked) {
+            // Update the status tracker.
+            isCurrentlyChecked = checked
+
+            // Refresh the drawable state.
+            refreshDrawableState()
+
+            // Propagate the checked status to the child views.
+            for (i in 0 until childCount) {
+                // Get a handle for the child view.
+                val childView = getChildAt(i)
+
+                // Propagate the checked status if the child view is checkable.
+                if (childView is Checkable) {
+                    // Cast the child view to `Checkable`.
+                    val checkableChildView = childView as Checkable
+
+                    // Set the checked status.
+                    checkableChildView.isChecked = checked
+                }
+            }
+        }
+    }
+
+    override fun toggle() {
+        // Toggle the state.
+        isChecked = !isCurrentlyChecked
+    }
+
+    public override fun onCreateDrawableState(extraSpace: Int): IntArray {
+        // Run the default commands.
+        val drawableState = super.onCreateDrawableState(extraSpace + 1)
+
+        if (isCurrentlyChecked) {
+            // Merge the drawable states.
+            mergeDrawableStates(drawableState, checkedStateSet)
+        }
+
+        // Return the drawable state.
+        return drawableState
+    }
+}
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