fix(menu): collapse empty menu panel (#12211)

crisbeto · josephperrott · commit b23cecd3a86b · 2018-07-18T11:09:58.000-07:00
diff --git a/src/lib/menu/menu.scss b/src/lib/menu/menu.scss
@@ -19,7 +19,8 @@ $mat-menu-submenu-indicator-size: 10px !default;
   }
 }
 
-.mat-menu-content {
+// `:not(:empty)` allows for the menu to collapse to 0x0 when it doesn't have content.
+.mat-menu-content:not(:empty) {
   padding-top: $mat-menu-vertical-padding;
   padding-bottom: $mat-menu-vertical-padding;
 }

Original file line number	Diff line number	Diff line change
`@@ -19,7 +19,8 @@ $mat-menu-submenu-indicator-size: 10px !default;`
`19`	`19`	`}`
`20`	`20`	`}`
`21`	`21`
`22`		`-.mat-menu-content {`
	`22`	+// `:not(:empty)` allows for the menu to collapse to 0x0 when it doesn't have content.
	`23`	`+.mat-menu-content:not(:empty) {`
`23`	`24`	`padding-top: $mat-menu-vertical-padding;`
`24`	`25`	`padding-bottom: $mat-menu-vertical-padding;`
`25`	`26`	`}`