{"version":3,"file":"su-labs-font-size.mjs","sources":["../../../../projects/su-labs/font-size/src/lib/font-size.service.ts","../../../../projects/su-labs/font-size/src/public-api.ts","../../../../projects/su-labs/font-size/src/su-labs-font-size.ts"],"sourcesContent":["import { Injectable, signal, computed } from '@angular/core';\nimport { FontSizeConfig } from './font-size-config.interface';\n\n@Injectable({ providedIn: 'root' })\nexport class FontSizeService {\n /**\n * Default font size in pixels.\n * Can be overridden via {@link configure}.\n */\n defaultSize = signal(14);\n\n /**\n * Minimum allowed font size in pixels.\n * Can be overridden via {@link configure}.\n */\n minSize = signal(10);\n\n /**\n * Maximum allowed font size in pixels.\n * Can be overridden via {@link configure}.\n */\n maxSize = signal(22);\n\n /**\n * Default step value (in pixels) for increase/decrease operations.\n * Can be overridden via {@link configure} or per call in {@link increase} / {@link decrease}.\n */\n step = signal(2);\n\n /**\n * Key used for persisting the font size in localStorage.\n * Defaults to `\"app:font-size\"`.\n */\n private storageKey = 'su:font-size';\n\n /**\n * CSS custom property name where the font size is applied.\n * Defaults to `\"--base-font-size\"`.\n */\n private cssVarName = '--base-font-size';\n\n /**\n * Current font size state (reactive).\n */\n fontSize = signal(this.readFromStorage());\n\n /**\n * True if current font size equals the default size.\n */\n isDefault = computed(() => this.fontSize() === this.defaultSize());\n\n /**\n * True if current font size equals the maximum size.\n */\n isMax = computed(() => this.fontSize() === this.maxSize());\n\n /**\n * True if current font size equals the minimum size.\n */\n isMin = computed(() => this.fontSize() === this.minSize());\n\n /**\n * Updates the configuration for font size handling.\n * Any omitted values will fall back to their defaults.\n *\n * @param cfg Partial configuration object (min, max, default, step, storage key, CSS variable name).\n */\n configure(cfg: Partial = {}): void {\n if (cfg.minSize !== undefined) this.minSize.set(cfg.minSize);\n if (cfg.maxSize !== undefined) this.maxSize.set(cfg.maxSize);\n if (cfg.defaultSize !== undefined) this.defaultSize.set(cfg.defaultSize);\n if (cfg.step !== undefined) this.step.set(cfg.step);\n if (cfg.storageKey) this.storageKey = cfg.storageKey;\n if (cfg.cssVarName) this.cssVarName = cfg.cssVarName;\n\n // Ensure logical invariants\n if (this.minSize() > this.maxSize()) this.maxSize.set(this.minSize());\n if (this.defaultSize() < this.minSize())\n this.defaultSize.set(this.minSize());\n if (this.defaultSize() > this.maxSize())\n this.defaultSize.set(this.maxSize());\n if (this.step() <= 0 || !Number.isFinite(this.step())) this.step.set(1);\n\n // Clamp current size after configuration changes\n this.fontSize.update((s) => this.clamp(s));\n }\n\n /**\n * Initializes the font size service.\n * Loads the persisted value (if available), clamps it,\n * applies it to the DOM, and updates internal state.\n * Should typically be called once at application startup.\n */\n init(): void {\n const size = this.readFromStorage();\n this.fontSize.set(this.clamp(size));\n this.applyCssVar(this.fontSize());\n }\n\n /**\n * Sets the font size to a specific value (clamped within min/max).\n *\n * @param size Desired font size in pixels.\n */\n setFontSize(size: number): void {\n const clamped = this.clamp(size);\n this.fontSize.set(clamped);\n this.applyCssVar(clamped);\n this.writeToStorage(clamped);\n }\n\n /**\n * Increases the font size.\n *\n * @param step Optional custom step (pixels). Falls back to configured {@link step} if omitted.\n */\n increase(step?: number): void {\n this.setFontSize(this.fontSize() + (step ?? this.step()));\n }\n\n /**\n * Decreases the font size.\n *\n * @param step Optional custom step (pixels). Falls back to configured {@link step} if omitted.\n */\n decrease(step?: number): void {\n this.setFontSize(this.fontSize() - (step ?? this.step()));\n }\n\n /**\n * Resets the font size to the configured {@link defaultSize}.\n * Also removes the persisted value from localStorage.\n */\n reset(): void {\n const d = this.defaultSize();\n this.fontSize.set(d);\n this.applyCssVar(d);\n localStorage.removeItem(this.storageKey);\n }\n\n /**\n * Clamps a given value between the configured {@link minSize} and {@link maxSize}.\n *\n * @param size Value to clamp.\n * @returns Clamped value within the allowed range.\n */\n private clamp(size: number): number {\n return Math.min(Math.max(size, this.minSize()), this.maxSize());\n }\n\n /**\n * Reads the font size from localStorage.\n * Falls back to {@link defaultSize} if no value is stored or value is invalid.\n *\n * @returns Stored font size or default.\n */\n private readFromStorage(): number {\n const stored = localStorage.getItem(this.storageKey);\n const parsed = stored ? Number(stored) : this.defaultSize();\n return Number.isFinite(parsed) ? parsed : this.defaultSize();\n }\n\n /**\n * Persists the current font size in localStorage.\n *\n * @param size Font size value to persist.\n */\n private writeToStorage(size: number): void {\n localStorage.setItem(this.storageKey, String(size));\n }\n\n /**\n * Applies the current font size to the DOM\n * using the configured CSS custom property name.\n *\n * @param size Font size value in pixels.\n */\n private applyCssVar(size: number): void {\n document.documentElement.style.setProperty(this.cssVarName, `${size}px`);\n }\n}\n","/*\n * Public API Surface of font-size\n */\n\nexport * from './lib/font-size.service';\nexport * from './lib/font-size-config.interface';\n","/**\n * Generated bundle index. 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