Support for fieldset HTML element both as a standalone container and within FormPanel (#129)

1 files changed, 83 insertions, 0 deletions

diff --git a/src/main/kotlin/pl/treksoft/kvision/panel/FieldsetPanel.kt b/src/main/kotlin/pl/treksoft/kvision/panel/FieldsetPanel.kt
new file mode 100644
index 00000000..14310ffc
--- /dev/null
+++ b/src/main/kotlin/pl/treksoft/kvision/panel/FieldsetPanel.kt
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2017-present Robert Jaros
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package pl.treksoft.kvision.panel
+
+import com.github.snabbdom.VNode
+import pl.treksoft.kvision.core.Container
+import pl.treksoft.kvision.html.TAG
+import pl.treksoft.kvision.html.Tag
+
+/**
+ * The HTML fieldset container.
+ *
+ * @constructor
+ * @param legend the legend of the fieldset
+ * @param classes a set of CSS class names
+ * @param init an initializer extension function
+ */
+open class FieldsetPanel(
+    legend: String? = null,
+    classes: Set<String> = setOf(),
+    init: (FieldsetPanel.() -> Unit)? = null
+) :
+    SimplePanel(classes = classes + "kv_fieldset") {
+
+    /**
+     * The legend of the fieldset.
+     */
+    var legend
+        get() = legendComponent.content
+        set(value) {
+            legendComponent.content = value
+        }
+
+    /**
+     * The legend component.
+     */
+    protected val legendComponent = Tag(TAG.LEGEND, legend)
+
+    init {
+        @Suppress("LeakingThis")
+        init?.invoke(this)
+    }
+
+    override fun render(): VNode {
+        val childrenVNodes = childrenVNodes()
+        childrenVNodes.asDynamic().unshift(legendComponent.renderVNode())
+        return render("fieldset", childrenVNodes)
+    }
+}
+
+/**
+ * DSL builder extension function.
+ *
+ * It takes the same parameters as the constructor of the built component.
+ */
+fun Container.fieldsetPanel(
+    legend: String? = null,
+    classes: Set<String> = setOf(),
+    init: (FieldsetPanel.() -> Unit)? = null
+): FieldsetPanel {
+    val fieldsetPanel = FieldsetPanel(legend, classes, init)
+    this.add(fieldsetPanel)
+    return fieldsetPanel
+}