Add support for custom html elements and custom css styles (#144)

1 files changed, 81 insertions, 0 deletions

diff --git a/src/main/kotlin/pl/treksoft/kvision/html/CustomTag.kt b/src/main/kotlin/pl/treksoft/kvision/html/CustomTag.kt
new file mode 100644
index 00000000..34910205
--- /dev/null
+++ b/src/main/kotlin/pl/treksoft/kvision/html/CustomTag.kt
@@ -0,0 +1,81 @@
+/*
+ * 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.html
+
+import com.github.snabbdom.VNode
+import pl.treksoft.kvision.core.Container
+
+/**
+ * HTML custom tag component.
+ *
+ * @constructor
+ * @param elementName element name
+ * @param content element text
+ * @param rich determines if [content] can contain HTML code
+ * @param align content align
+ * @param classes a set of CSS class names
+ * @param attributes a map of additional attributes
+ * @param init an initializer extension function
+ */
+open class CustomTag(
+    elementName: String,
+    content: String? = null,
+    rich: Boolean = false,
+    align: Align? = null,
+    classes: Set<String> = setOf(), attributes: Map<String, String> = mapOf(),
+    init: (CustomTag.() -> Unit)? = null
+) :
+    Tag(TAG.DIV, content, rich, align, classes, attributes) {
+
+    /**
+     * HTML element name.
+     */
+    var elementName by refreshOnUpdate(elementName)
+
+    init {
+        @Suppress("LeakingThis")
+        init?.invoke(this)
+    }
+
+    override fun render(elementName: String, children: Array<dynamic>): VNode {
+        return super.render(this.elementName, children)
+    }
+}
+
+/**
+ * DSL builder extension function.
+ *
+ * It takes the same parameters as the constructor of the built component.
+ */
+fun Container.customTag(
+    elementName: String,
+    content: String? = null,
+    rich: Boolean = false,
+    align: Align? = null,
+    classes: Set<String> = setOf(),
+    attributes: Map<String, String> = mapOf(),
+    init: (CustomTag.() -> Unit)? = null
+): CustomTag {
+    val customTag = CustomTag(elementName, content, rich, align, classes, attributes).apply { init?.invoke(this) }
+    this.add(customTag)
+    return customTag
+}