Component Library scaffolding (#625)

components/src/button/button.component.ts

@@ -0,0 +1,77 @@
+import { Input, HostBinding, OnChanges, Directive } from "@angular/core";
+
+export type ButtonTypes = "primary" | "secondary" | "danger";
+
+const buttonStyles: Record<ButtonTypes, string> = {
+  primary: [
+    "tw-border-primary-500",
+    "tw-bg-primary-500",
+    "!tw-text-contrast",
+    "hover:tw-bg-primary-700",
+    "hover:tw-border-primary-700",
+    "focus:tw-bg-primary-700",
+    "focus:tw-border-primary-700",
+  ].join(" "),
+  secondary: [
+    "tw-bg-transparent",
+    "tw-border-text-muted",
+    "!tw-text-muted",
+    "hover:tw-bg-secondary-500",
+    "hover:tw-border-secondary-500",
+    "hover:tw-text-contrast",
+    "focus:tw-bg-secondary-500",
+    "focus:tw-border-secondary-500",
+    "focus:tw-text-contrast",
+  ].join(" "),
+  danger: [
+    "tw-bg-transparent",
+    "tw-border-danger-500",
+    "!tw-text-danger",
+    "hover:tw-bg-danger-500",
+    "hover:tw-border-danger-500",
+    "hover:tw-text-contrast",
+    "focus:tw-bg-danger-500",
+    "focus:tw-border-danger-500",
+    "focus:tw-text-contrast",
+  ].join(" "),
+};
+
+@Directive({
+  selector: "button[bit-button], a[bit-button]",
+})
+export class ButtonComponent implements OnChanges {
+  @HostBinding("class") @Input("class") classList = "";
+
+  @Input()
+  buttonType: ButtonTypes = "secondary";
+
+  @Input()
+  block = false;
+
+  ngOnChanges() {
+    this.classList = this.classes.join(" ");
+  }
+
+  get classes(): string[] {
+    return [
+      "tw-font-semibold",
+      "tw-py-1.5",
+      "tw-px-3",
+      "tw-rounded",
+      "tw-transition",
+      "tw-border",
+      "tw-border-solid",
+      "tw-text-center",
+      "hover:tw-no-underline",
+      "disabled:tw-bg-secondary-100",
+      "disabled:tw-border-secondary-100",
+      "disabled:!tw-text-main",
+      "focus:tw-outline-none",
+      "focus:tw-ring",
+      "focus:tw-ring-offset-2",
+      "focus:tw-ring-primary-700",
+      this.block ? "tw-w-full tw-block" : "",
+      buttonStyles[this.buttonType ?? "secondary"],
+    ];
+  }
+}