fix(core): register all breakpoints at startup

* Previously, we weren't registering the breakpoints when the media marshaller started up, which had been done by the old MediaMonitor. This corrects that Fixes #915
angular · Dec 14, 2018 · 6a724bf · 6a724bf
1 parent d76708b
commit 6a724bf
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Showing 4 changed files with 35 additions and 15 deletions.
diff --git a/src/lib/core/match-media/mock/mock-match-media.ts b/src/lib/core/match-media/mock/mock-match-media.ts
@@ -79,32 +79,32 @@ export class MockMatchMedia extends MatchMedia {
       // Simulate activation of overlapping lt-<XXX> ranges
       switch (alias) {
         case 'lg'   :
-          this._activateByAlias('lt-xl', true);
+          this._activateByAlias('lt-xl');
           break;
         case 'md'   :
-          this._activateByAlias('lt-xl, lt-lg', true);
+          this._activateByAlias('lt-xl, lt-lg');
           break;
         case 'sm'   :
-          this._activateByAlias('lt-xl, lt-lg, lt-md', true);
+          this._activateByAlias('lt-xl, lt-lg, lt-md');
           break;
         case 'xs'   :
-          this._activateByAlias('lt-xl, lt-lg, lt-md, lt-sm', true);
+          this._activateByAlias('lt-xl, lt-lg, lt-md, lt-sm');
           break;
       }
 
       // Simulate activate of overlapping gt-<xxxx> mediaQuery ranges
       switch (alias) {
         case 'xl'   :
-          this._activateByAlias('gt-lg, gt-md, gt-sm, gt-xs', true);
+          this._activateByAlias('gt-lg, gt-md, gt-sm, gt-xs');
           break;
         case 'lg'   :
-          this._activateByAlias('gt-md, gt-sm, gt-xs', true);
+          this._activateByAlias('gt-md, gt-sm, gt-xs');
           break;
         case 'md'   :
-          this._activateByAlias('gt-sm, gt-xs', true);
+          this._activateByAlias('gt-sm, gt-xs');
           break;
         case 'sm'   :
-          this._activateByAlias('gt-xs', true);
+          this._activateByAlias('gt-xs');
           break;
       }
     }
@@ -115,21 +115,18 @@ export class MockMatchMedia extends MatchMedia {
   /**
    *
    */
-  private _activateByAlias(aliases: string, useOverlaps = false) {
+  private _activateByAlias(aliases: string) {
     const activate = (alias: string) => {
       const bp = this._breakpoints.findByAlias(alias);
-      this._activateByQuery(bp ? bp.mediaQuery : alias, useOverlaps);
+      this._activateByQuery(bp ? bp.mediaQuery : alias);
     };
     aliases.split(',').forEach(alias => activate(alias.trim()));
   }
 
   /**
    *
    */
-  private _activateByQuery(mediaQuery: string, useOverlaps = false) {
-    if (useOverlaps) {
-      this._registerMediaQuery(mediaQuery);
-    }
+  private _activateByQuery(mediaQuery: string) {
     const mql = this._registry.get(mediaQuery);
     const alreadyAdded = this._actives
       .reduce((found, it) => (found || (mql ? (it.media === mql.media) : false)), false);

diff --git a/src/lib/core/media-marshaller/media-marshaller.ts b/src/lib/core/media-marshaller/media-marshaller.ts
@@ -47,6 +47,7 @@ export class MediaMarshaller {
 
   constructor(protected matchMedia: MatchMedia,
               protected breakpoints: BreakPointRegistry) {
+    this.registerBreakpoints();
     this.matchMedia.observe().subscribe(this.activate.bind(this));
   }
 
@@ -224,4 +225,9 @@ export class MediaMarshaller {
     }
     return bpMap.get('');
   }
+
+  private registerBreakpoints() {
+    const queries = this.breakpoints.sortedItems.map(bp => bp.mediaQuery);
+    this.matchMedia.registerQuery(queries);
+  }
 }
diff --git a/src/lib/extended/show-hide/hide.spec.ts b/src/lib/extended/show-hide/hide.spec.ts
@@ -224,6 +224,22 @@ describe('hide directive', () => {
       expectActivation('xs').toHaveStyle({'display': 'none'}, styler);
       expectActivation('md').not.toHaveStyle({'display': 'none'}, styler);
     });
+
+    it('should work with overlapping breakpoint', () => {
+      let template = `
+              <div>
+                <span fxHide></span>
+                <span fxHide.lt-md class="hideOnXs">Label</span>
+              </div>
+           `;
+      let expectActivation: any =
+        makeExpectWithActivation(createTestComponent(template), '.hideOnXs');
+
+      matchMedia.useOverlaps = true;
+      expectActivation().not.toHaveStyle({'display': 'none'}, styler);
+      expectActivation('xs').toHaveStyle({'display': 'none'}, styler);
+      expectActivation('md').not.toHaveStyle({'display': 'none'}, styler);
+    });
   });
 
   it('should support hide and show', () => {

diff --git a/src/lib/extended/show-hide/show-hide.ts b/src/lib/extended/show-hide/show-hide.ts
@@ -103,8 +103,9 @@ export class ShowHideDirective extends BaseDirective2 implements AfterViewInit,
     const defaultValue = this.marshal.getValue(this.nativeElement, this.DIRECTIVE_KEY, '');
     if (defaultValue === undefined || defaultValue === '') {
       this.setValue(true, '');
+    } else {
+      this.triggerUpdate();
     }
-    this.updateWithValue(this.marshal.getValue(this.nativeElement, this.DIRECTIVE_KEY));
   }
 
   /**