fix(animations): remove deprecated trigger APIs (#10825)

BREAKING CHANGE: Animations defined using an at-symbol prefix that are
not property bound are now invalid.

```html
<!-- this is now invalid -->
<div @flip="flipState"></div>

<!-- change that to -->
<div [@flip]="flipState"></div>
```

BREAKING CHANGE: Animations that are not bound using the at-symbol
prefix using `animate-` must now be preixed using `bind-animate-`.

```html
<!-- this is now invalid -->
<div animate-flip="flipState"></div>

<!-- is valid now -->
<div bind-animate-flip="flipState"></div>
```

Closes #10825

modules/@angular/compiler/src/template_parser/template_parser.ts

@@ -39,14 +39,15 @@ import {PreparsedElementType, preparseElement} from './template_preparser';
 // Group 4 = "ref-/#"
 // Group 5 = "on-"
 // Group 6 = "bindon-"
-// Group 7 = "animate-/@"
+// Group 7 = "@"
 // Group 8 = the identifier after "bind-", "var-/#", or "on-"
 // Group 9 = identifier inside [()]
 // Group 10 = identifier inside []
 // Group 11 = identifier inside ()
 const BIND_NAME_REGEXP =
-    /^(?:(?:(?:(bind-)|(var-)|(let-)|(ref-|#)|(on-)|(bindon-)|(animate-|@))(.+))|\[\(([^\)]+)\)\]|\[([^\]]+)\]|\(([^\)]+)\))$/;
+    /^(?:(?:(?:(bind-)|(var-)|(let-)|(ref-|#)|(on-)|(bindon-)|(@))(.+))|\[\(([^\)]+)\)\]|\[([^\]]+)\]|\(([^\)]+)\))$/;
 
+const ANIMATE_PROP_PREFIX = 'animate-';
 const TEMPLATE_ELEMENT = 'template';
 const TEMPLATE_ATTR = 'template';
 const TEMPLATE_ATTR_PREFIX = '*';
@@ -540,8 +541,8 @@ class TemplateParseVisitor implements html.Visitor {
       } else if (isPresent(bindParts[7])) {  // match: animate-name
         if (attrName[0] == '@' && isPresent(attrValue) && attrValue.length > 0) {
           this._reportError(
-              `Assigning animation triggers via @prop="exp" attributes with an expression is deprecated. Use property bindings (e.g. [@prop]="exp") instead!`,
+              `Assigning animation triggers via @prop="exp" attributes with an expression is invalid. Use property bindings (e.g. [@prop]="exp") or use an attribute without a value \(e.g. @prop\) instead.`,
-              attr.sourceSpan, ParseErrorLevel.WARNING);
+              attr.sourceSpan, ParseErrorLevel.FATAL);
         }
         this._parseAnimation(
             bindParts[8], attrValue, attr.sourceSpan, targetMatchableAttrs, targetAnimationProps);
@@ -598,9 +599,18 @@ class TemplateParseVisitor implements html.Visitor {
       name: string, expression: string, sourceSpan: ParseSourceSpan,
       targetMatchableAttrs: string[][], targetProps: BoundElementOrDirectiveProperty[],
       targetAnimationProps: BoundElementPropertyAst[]) {
-    if (name[0] == '@') {
+    const animatePropLength = ANIMATE_PROP_PREFIX.length;
+    var isAnimationProp = name[0] == '@';
+    var animationPrefixLength = 1;
+    if (name.substring(0, animatePropLength) == ANIMATE_PROP_PREFIX) {
+      isAnimationProp = true;
+      animationPrefixLength = animatePropLength;
+    }
+
+    if (isAnimationProp) {
       this._parseAnimation(
-          name.substr(1), expression, sourceSpan, targetMatchableAttrs, targetAnimationProps);
+          name.substr(animationPrefixLength), expression, sourceSpan, targetMatchableAttrs,
+          targetAnimationProps);
     } else {
       this._parsePropertyAst(
           name, this._parseBinding(expression, sourceSpan), sourceSpan, targetMatchableAttrs,
@@ -809,11 +819,10 @@ class TemplateParseVisitor implements html.Visitor {
         boundPropertyName = partValue.substr(1);
         bindingType = PropertyBindingType.Animation;
         securityContext = SecurityContext.NONE;
-        // DEPRECATED: remove this if statement post RC5
         if (boundPropertyName[0] == '@') {
           this._reportError(
-              `Assigning animation triggers within host data as attributes such as "@prop": "exp" is deprecated. Use host bindings (e.g. "[@prop]": "exp") instead!`,
+              `Assigning animation triggers within host data as attributes such as "@prop": "exp" is invalid. Use host bindings (e.g. "[@prop]": "exp") instead.`,
-              sourceSpan, ParseErrorLevel.WARNING);
+              sourceSpan, ParseErrorLevel.FATAL);
           boundPropertyName = boundPropertyName.substr(1);
         }
       } else {

modules/@angular/compiler/test/template_parser/template_parser_spec.ts

@@ -284,32 +284,26 @@ Can't bind to 'invalidProp' since it isn't a known property of 'my-component'.
           ]);
         });
 
-        it('should parse bound properties via animate- and not report them as attributes', () => {
+        it('should parse bound properties via bind-animate- and not report them as animation properties',
-          expect(humanizeTplAst(parse('<div animate-something="value2">', []))).toEqual([
-            [ElementAst, 'div'],
-            [BoundElementPropertyAst, PropertyBindingType.Animation, 'something', 'value2', null]
-          ]);
-        });
-
-        // DEPRECATED: remove this spec post RC5
-        it('should parse bound properties via @ and not report them as attributes and also report a deprecation warning',
            () => {
-             expect(humanizeTplAst(parse('<div @something="value2">', []))).toEqual([
+             expect(humanizeTplAst(parse('<div bind-animate-something="value2">', []))).toEqual([
                [ElementAst, 'div'],
                [
                  BoundElementPropertyAst, PropertyBindingType.Animation, 'something', 'value2', null
                ]
              ]);
-
-             expect(console.warnings).toEqual([[
-               'Template parse warnings:',
-               `Assigning animation triggers via @prop="exp" attributes with an expression is deprecated. Use property bindings (e.g. [@prop]="exp") instead! ("<div [ERROR ->]@something="value2">"): TestComp@0:5`
-             ].join('\n')]);
            });
 
-        // DEPRECATED: remove this spec post RC5
+        it('should throw an error when parsing detects non-bound properties via @ that contain a value',
-        it('should issue a warning when host attributes contain a non property-bound animation trigger',
            () => {
+             expect(() => { parse('<div @something="value2">', []); })
+                 .toThrowError(
+                     /Assigning animation triggers via @prop="exp" attributes with an expression is invalid. Use property bindings \(e.g. \[@prop\]="exp"\) or use an attribute without a value \(e.g. @prop\) instead. \("<div \[ERROR ->\]@something="value2">"\): TestComp@0:5/);
+           });
+
+        it('should throw an error when host attributes contain a non property-bound animation trigger',
+           () => {
+             expect(() => {
                var dirA = CompileDirectiveMetadata.create({
                  selector: 'div',
                  type: new CompileTypeMetadata({moduleUrl: someModuleUrl, name: 'DirA'}),
@@ -317,11 +311,9 @@ Can't bind to 'invalidProp' since it isn't a known property of 'my-component'.
                });
 
                humanizeTplAst(parse('<div></div>', [dirA]));
-
+             })
-             expect(console.warnings).toEqual([[
+                 .toThrowError(
-               'Template parse warnings:',
+                     /Assigning animation triggers within host data as attributes such as "@prop": "exp" is invalid. Use host bindings \(e.g. "\[@prop\]": "exp"\) instead. \("\[ERROR ->\]<div><\/div>"\): TestComp@0:0, Directive DirA/);
-               `Assigning animation triggers within host data as attributes such as "@prop": "exp" is deprecated. Use host bindings (e.g. "[@prop]": "exp") instead! ("[ERROR ->]<div></div>"): TestComp@0:0, Directive DirA`
-             ].join('\n')]);
            });
 
         it('should not issue a warning when host attributes contain a valid property-bound animation trigger',