feat: add focusDelay, hoverDelay and hideDelay to Popover (#6419)

vaadin-popover-flow-parent/vaadin-popover-flow/src/main/java/com/vaadin/flow/component/popover/Popover.java

@@ -110,6 +110,67 @@ public String getFor() {
         return getElement().getProperty("for");
     }
 
+    /**
+     * The delay in milliseconds before the popover is opened on target keyboard
+     * focus.
+     *
+     * @param focusDelay
+     *            the delay in milliseconds
+     */
+    public void setFocusDelay(int focusDelay) {
+        getElement().setProperty("focusDelay", focusDelay);
+    }
+
+    /**
+     * The delay in milliseconds before the popover is opened on target keyboard
+     * focus.
+     *
+     * @return the delay in milliseconds
+     */
+    public int getFocusDelay() {
+        return getElement().getProperty("focusDelay", 0);
+    }
+
+    /**
+     * The delay in milliseconds before the popover is opened on target hover.
+     *
+     * @param hoverDelay
+     *            the delay in milliseconds
+     */
+    public void setHoverDelay(int hoverDelay) {
+        getElement().setProperty("hoverDelay", hoverDelay);
+    }
+
+    /**
+     * The delay in milliseconds before the popover is opened on target hover.
+     *
+     * @return the delay in milliseconds
+     */
+    public int getHoverDelay() {
+        return getElement().getProperty("hoverDelay", 0);
+    }
+
+    /**
+     * The delay in milliseconds before the popover is closed on losing hover.
+     * On target blur, the popover is closed immediately.
+     *
+     * @param hideDelay
+     *            the delay in milliseconds
+     */
+    public void setHideDelay(int hideDelay) {
+        getElement().setProperty("hideDelay", hideDelay);
+    }
+
+    /**
+     * The delay in milliseconds before the popover is closed on losing hover.
+     * On target blur, the popover is closed immediately.
+     *
+     * @return the delay in milliseconds
+     */
+    public int getHideDelay() {
+        return getElement().getProperty("hideDelay", 0);
+    }
+
     /**
      * Sets the target component for this popover.
      * <p>

vaadin-popover-flow-parent/vaadin-popover-flow/src/test/java/com/vaadin/flow/component/popover/PopoverTest.java

@@ -65,4 +65,34 @@ public void setPosition_getPosition() {
     public void defaultPosition_equalsNull() {
         Assert.assertEquals(null, popover.getPosition());
     }
+
+    @Test
+    public void setFocusDelay_getFocusDelay() {
+        Assert.assertEquals(0, popover.getFocusDelay());
+
+        popover.setFocusDelay(1000);
+        Assert.assertEquals(1000, popover.getFocusDelay());
+        Assert.assertEquals(1000,
+                popover.getElement().getProperty("focusDelay", 0));
+    }
+
+    @Test
+    public void setHoverDelay_getHoverDelay() {
+        Assert.assertEquals(0, popover.getHoverDelay());
+
+        popover.setHoverDelay(1000);
+        Assert.assertEquals(1000, popover.getHoverDelay());
+        Assert.assertEquals(1000,
+                popover.getElement().getProperty("hoverDelay", 0));
+    }
+
+    @Test
+    public void setHideDelay_getHideDelay() {
+        Assert.assertEquals(0, popover.getHideDelay());
+
+        popover.setHideDelay(1000);
+        Assert.assertEquals(1000, popover.getHideDelay());
+        Assert.assertEquals(1000,
+                popover.getElement().getProperty("hideDelay", 0));
+    }
 }