Add passthrough(pt) option to Panel

components/lib/panel/Panel.d.ts

@@ -10,6 +10,8 @@
 import { ButtonHTMLAttributes, VNode } from 'vue';
 import { ClassComponent, GlobalComponentConstructor } from '../ts-helpers';
 
+export declare type PanelPassThroughOptionType = PanelPassThroughAttributes | ((options: { props: PanelProps; state: PanelState }) => PanelPassThroughAttributes) | null | undefined;
+
 /**
  * Custom toggle event.
  * @see {@link PanelEmits.toggle}
@@ -25,6 +27,62 @@ export interface PanelToggleEvent {
     value: boolean;
 }
 
+/**
+ * Custom passthrough(pt) options.
+ * @see {@link PanelProps.pt}
+ */
+export interface PanelPassThroughOptions {
+    /**
+     * Uses to pass attributes to the root's DOM element.
+     */
+    root?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the header's DOM element.
+     */
+    header?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the title's DOM element.
+     */
+    title?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the title's DOM element.
+     */
+    icons?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the toggler's DOM element.
+     */
+    toggler?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the headericon's DOM element.
+     */
+    headericon?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the toggleablecontent's DOM element.
+     */
+    toggleablecontent?: PanelPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the content's DOM element.
+     */
+    content?: PanelPassThroughOptionType;
+}
+
+/**
+ * Custom passthrough attributes for each DOM elements
+ */
+export interface PanelPassThroughAttributes {
+    [key: string]: any;
+}
+
+/**
+ * Defines current inline states in Panel component.
+ */
+export interface PanelState {
+    /**
+     * Current collapsed state as a boolean
+     */
+    d_collapsed: boolean;
+}
+
 /**
  * Defines valid properties in Panel component.
  */
@@ -47,6 +105,11 @@ export interface PanelProps {
      * Uses to pass the custom value to read for the button inside the component.
      */
     toggleButtonProps?: ButtonHTMLAttributes | undefined;
+    /**
+     * Uses to pass attributes to DOM elements inside the component.
+     * @type {PanelPassThroughOptions}
+     */
+    pt?: PanelPassThroughOptions;
 }
 
 /**
@@ -65,6 +128,16 @@ export interface PanelSlots {
      * Custom icons template.
      */
     icons(): VNode[];
+    /**
+     * Custom header icon template of panel.
+     * @param {Object} scope - header icon slot's params.
+     */
+    headericon(scope: {
+        /**
+         * Collapsed state as a boolean
+         */
+        collapsed: boolean;
+    }): VNode[];
 }
 
 /**

components/lib/panel/Panel.vue

@@ -12,7 +12,7 @@
                     v-ripple
                     type="button"
                     role="button"
-                    class="p-panel-toggler p-link"
+                    class="p-panel-header-icon p-panel-toggler p-link"
                     :aria-label="buttonAriaLabel"
                     :aria-controls="ariaId + '_content'"
                     :aria-expanded="!d_collapsed"
@@ -20,7 +20,9 @@
                     @keydown="onKeyDown"
                     v-bind="{ ...toggleButtonProps, ...ptm('toggler') }"
                 >
-                    <span :class="['p-panel-header-icon', { 'pi pi-minus': !d_collapsed, 'pi pi-plus': d_collapsed }]" v-bind="ptm('headericon')"></span>
+                    <slot name="headericon" :collapsed="d_collapsed">
+                        <span :class="{ 'pi pi-minus': !d_collapsed, 'pi pi-plus': d_collapsed }" v-bind="ptm('headericon')"></span>
+                    </slot>
                 </button>
             </div>
         </div>