WEB-492: Material Design 3 implementation: Login

src/app/shared/m3-ui/index.ts

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+/**
+ * Material Design 3 UI Components
+ *
+ * This module exports all Material Design 3 components for easy importing.
+ */
+
+export { M3ButtonComponent, M3ButtonVariant } from './m3-button/m3-button.component';
+export { M3IconComponent, M3IconStyle } from './m3-icon/m3-icon.component';

src/app/shared/m3-ui/m3-button/m3-button.component.html

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+<div [class]="containerClasses">
+  @if (variant === 'filled') {
+    <md-filled-button [type]="type" [disabled]="disabled" (click)="onClick($event)">
+      {{ label }}<ng-content></ng-content>
+    </md-filled-button>
+  }
+
+  @if (variant === 'outlined') {
+    <md-outlined-button [type]="type" [disabled]="disabled" (click)="onClick($event)">
+      {{ label }}<ng-content></ng-content>
+    </md-outlined-button>
+  }
+
+  @if (variant === 'elevated') {
+    <md-elevated-button [type]="type" [disabled]="disabled" (click)="onClick($event)">
+      {{ label }}<ng-content></ng-content>
+    </md-elevated-button>
+  }
+
+  @if (variant === 'text') {
+    <md-text-button [type]="type" [disabled]="disabled" (click)="onClick($event)">
+      {{ label }}<ng-content></ng-content>
+    </md-text-button>
+  }
+
+  @if (variant === 'tonal') {
+    <md-filled-tonal-button [type]="type" [disabled]="disabled" (click)="onClick($event)">
+      {{ label }}<ng-content></ng-content>
+    </md-filled-tonal-button>
+  }
+</div>

src/app/shared/m3-ui/m3-button/m3-button.component.scss

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+// Material Web Button Component Styles
+// Base styles are applied globally in src/theme/_material-web.scss
+
+.m3-button-container {
+  display: inline-block;
+
+  &--full-width {
+    display: block;
+    width: 100%;
+
+    md-filled-button,
+    md-outlined-button,
+    md-elevated-button,
+    md-text-button,
+    md-filled-tonal-button {
+      color: var(--md-filled-button-disabled-label-text-color, #44474e);
+      width: 100%;
+    }
+  }
+}

src/app/shared/m3-ui/m3-button/m3-button.component.ts

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+import { Component, Input, Output, EventEmitter, CUSTOM_ELEMENTS_SCHEMA, ViewEncapsulation } from '@angular/core';
+import { CommonModule } from '@angular/common';
+
+// Import Material Web Components
+import '@material/web/button/filled-button.js';
+import '@material/web/button/outlined-button.js';
+import '@material/web/button/elevated-button.js';
+import '@material/web/button/text-button.js';
+import '@material/web/button/filled-tonal-button.js';
+import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
+
+export type M3ButtonVariant = 'filled' | 'outlined' | 'elevated' | 'text' | 'tonal';
+
+/**
+ * Material Design 3 Button Component
+ *
+ * Wrapper for @material/web button components following Material Design 3 specifications.
+ * Uses native Material Design 3 web components with full theming support.
+ *
+ * Features:
+ * - Five button variants: filled, outlined, elevated, text, and tonal
+ * - Automatic light/dark theme support
+ * - Proper disabled states with gray colors
+ * - Hover, focus, and pressed states with ripple effects
+ * - Full width support
+ * - Icon support (leading and trailing)
+ *
+ * @example
+ * // Basic usage with label input
+ * <mifosx-m3-button
+ *   variant="filled"
+ *   [label]="'Submit'"
+ *   (clicked)="onSubmit()">
+ * </mifosx-m3-button>
+ *
+ * @example
+ * // With content projection
+ * <mifosx-m3-button variant="outlined" (clicked)="onCancel()">
+ *   Cancel
+ * </mifosx-m3-button>
+ *
+ * @example
+ * // Full width disabled button
+ * <mifosx-m3-button
+ *   variant="filled"
+ *   [label]="'Loading...'"
+ *   [disabled]="true"
+ *   [fullWidth]="true">
+ * </mifosx-m3-button>
+ *
+ * @example
+ * // With translated label
+ * <mifosx-m3-button
+ *   variant="tonal"
+ *   type="submit"
+ *   [label]="'labels.buttons.Save' | translate"
+ *   (clicked)="onSave()">
+ * </mifosx-m3-button>
+ */
+@Component({
+  selector: 'mifosx-m3-button',
+  templateUrl: './m3-button.component.html',
+  styleUrls: ['./m3-button.component.scss'],
+  standalone: true,
+  imports: [
+    STANDALONE_SHARED_IMPORTS,
+    CommonModule
+  ],
+  schemas: [CUSTOM_ELEMENTS_SCHEMA],
+  encapsulation: ViewEncapsulation.None
+})
+export class M3ButtonComponent {
+  /**
+   * Button variant
+   * - filled: Solid background (default, highest emphasis)
+   * - outlined: Bordered button (medium emphasis)
+   * - elevated: Raised button with shadow (medium emphasis)
+   * - text: Text-only button (low emphasis)
+   * - tonal: Subtle background button (medium emphasis)
+   */
+  @Input() variant: M3ButtonVariant = 'filled';
+
+  /**
+   * Button type attribute
+   */
+  @Input() type: 'button' | 'submit' | 'reset' = 'button';
+
+  /**
+   * Disabled state
+   */
+  @Input() disabled: boolean = false;
+
+  /**
+   * Button label text
+   */
+  @Input() label?: string;
+
+  /**
+   * Icon to display before text
+   */
+  @Input() icon?: string;
+
+  /**
+   * Icon to display after text
+   */
+  @Input() trailingIcon?: string;
+
+  /**
+   * Whether the button should take full width
+   */
+  @Input() fullWidth: boolean = false;
+
+  /**
+   * Click event emitter
+   */
+  @Output() clicked = new EventEmitter<Event>();
+
+  /**
+   * Handle button click
+   */
+  onClick(event: Event): void {
+    if (!this.disabled) {
+      this.clicked.emit(event);
+    }
+  }
+
+  /**
+   * Get the Material Web Component tag name based on variant
+   */
+  get componentTag(): string {
+    switch (this.variant) {
+      case 'filled':
+        return 'md-filled-button';
+      case 'outlined':
+        return 'md-outlined-button';
+      case 'elevated':
+        return 'md-elevated-button';
+      case 'text':
+        return 'md-text-button';
+      case 'tonal':
+        return 'md-filled-tonal-button';
+      default:
+        return 'md-filled-button';
+    }
+  }
+
+  /**
+   * Get container classes
+   */
+  get containerClasses(): string {
+    return this.fullWidth ? 'm3-button-container--full-width' : 'm3-button-container';
+  }
+}

src/app/shared/m3-ui/m3-icon/m3-icon.component.html

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+<span [class]="iconClass" [ngStyle]="iconStyles" class="m3-icon">{{ name }}</span>

src/app/shared/m3-ui/m3-icon/m3-icon.component.scss

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+// Material Symbols Font Faces
+// These will be loaded from Google Fonts or local files
+@use 'theme/material-web' as *;
+
+.m3-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  user-select: none;
+  vertical-align: middle;
+
+  // Smooth rendering
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  text-rendering: optimizelegibility;
+}
+
+// Material Symbols base styles
+.material-symbols-outlined,
+.material-symbols-filled,
+.material-symbols-rounded,
+.material-symbols-sharp {
+  font-family: 'Material Symbols Outlined', sans-serif;
+  font-weight: normal;
+  font-style: normal;
+  line-height: 1;
+  letter-spacing: normal;
+  text-transform: none;
+  white-space: nowrap;
+  word-wrap: normal;
+  direction: ltr;
+  color: var(--md-icon-prefix-label-text-color, #44474e);
+}
+
+// Filled variant
+.material-symbols-filled {
+  font-variation-settings:
+    'FILL' 1,
+    'wght' 400,
+    'GRAD' 0,
+    'opsz' 24;
+}
+
+// Outlined variant (default)
+.material-symbols-outlined {
+  font-variation-settings:
+    'FILL' 0,
+    'wght' 400,
+    'GRAD' 0,
+    'opsz' 24;
+}
+
+// Rounded variant
+.material-symbols-rounded {
+  font-family: 'Material Symbols Rounded', sans-serif;
+  font-variation-settings:
+    'FILL' 0,
+    'wght' 400,
+    'GRAD' 0,
+    'opsz' 24;
+}
+
+// Sharp variant
+.material-symbols-sharp {
+  font-family: 'Material Symbols Sharp', sans-serif;
+  font-variation-settings:
+    'FILL' 0,
+    'wght' 400,
+    'GRAD' 0,
+    'opsz' 24;
+}

src/app/shared/m3-ui/m3-icon/m3-icon.component.ts

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+import { Component, Input, ViewEncapsulation } from '@angular/core';
+import { CommonModule } from '@angular/common';
+
+export type M3IconStyle = 'outlined' | 'filled' | 'rounded' | 'sharp';
+
+/**
+ * Material Design 3 Icon Component
+ *
+ * Wrapper for Material Symbols icons following Material Design 3 specifications.
+ * Uses Google's Material Symbols font for consistent iconography.
+ *
+ * Features:
+ * - Multiple icon styles: outlined (default), filled, rounded, and sharp
+ * - Automatic theme support
+ * - Size control
+ * - Color customization via CSS
+ *
+ * @example
+ * // Basic usage
+ * <mifosx-m3-icon name="account_circle"></mifosx-m3-icon>
+ *
+ * @example
+ * // With filled style
+ * <mifosx-m3-icon name="lock" style="filled"></mifosx-m3-icon>
+ *
+ * @example
+ * // With custom size
+ * <mifosx-m3-icon name="visibility" [size]="24"></mifosx-m3-icon>
+ *
+ * Common icon mappings from Font Awesome:
+ * - user-circle → account_circle
+ * - lock → lock
+ * - eye → visibility
+ * - eye-slash → visibility_off
+ * - home → home
+ * - search → search
+ * - settings → settings
+ * - menu → menu
+ * - close → close
+ */
+@Component({
+  selector: 'mifosx-m3-icon',
+  templateUrl: './m3-icon.component.html',
+  styleUrls: ['./m3-icon.component.scss'],
+  standalone: true,
+  imports: [CommonModule],
+  encapsulation: ViewEncapsulation.None
+})
+export class M3IconComponent {
+  /**
+   * Icon name from Material Symbols
+   * See: https://fonts.google.com/icons
+   */
+  @Input() name!: string;
+
+  /**
+   * Icon style variant
+   * - outlined: Default style with strokes (default)
+   * - filled: Solid filled icons
+   * - rounded: Rounded corner icons
+   * - sharp: Sharp corner icons
+   */
+  @Input() style: M3IconStyle = 'outlined';
+
+  /**
+   * Icon size in pixels
+   * Default is 24px (Material Design standard)
+   */
+  @Input() size: number = 24;
+
+  /**
+   * Whether the icon should be filled (alternative to style="filled")
+   * This is a convenience property for backwards compatibility
+   */
+  @Input() filled: boolean = false;
+
+  /**
+   * Get the CSS class for the icon style
+   */
+  get iconClass(): string {
+    const styleToUse = this.filled ? 'filled' : this.style;
+    return `material-symbols-${styleToUse}`;
+  }
+
+  /**
+   * Get the inline styles for the icon
+   */
+  get iconStyles(): { [key: string]: string } {
+    return {
+      'font-size': `${this.size}px`,
+      width: `${this.size}px`,
+      height: `${this.size}px`
+    };
+  }
+}