Create landing page + bugfixes

index.html

@@ -13,6 +13,96 @@
 			@import "style/dark.css";
 		</style>
 		<!-- Templates -->
+		<template id="template-landing">
+			<style>
+				.landing {
+					margin-left: 64px;
+					margin-right: 64px;
+
+					max-width: calc(100vw - 128px);
+				}
+
+				.landing-form {
+					display: flex;
+					flex-direction: column;
+					gap: 8px;
+				}
+
+				.landing-form label {
+					display: flex;
+					flex-direction: row;
+				}
+
+				.landing-form label span {
+					min-width: 20%;
+				}
+
+				.landing-form input {
+					flex-grow: 1;
+				}
+
+				.landing-form input[type="submit"] {
+					flex-grow: 0;
+				}
+
+				a {
+					color: var(--color-accent);
+				}
+			</style>
+			<div class="landing">
+				<h2>
+					What is this?
+				</h2>
+				<p>
+					Obsiview is a web viewer for <a href="https://obsidian.md/">Obsidian</a> vaults!
+				</p>
+				<p>
+					It's currently in the Alpha development stage, so some features are still missing, but it's already functional!
+				</p>
+				<p>
+					Please report bugs, suggest features, and leave feedback at <a href="https://github.com/Steffo99/obsidian-file-index/issues">the project's issue tracker</a>!
+				</p>
+				<h2>
+					How do I browse a Vault?
+				</h2>
+				<p>
+					To browse a vault, enter its details here:
+				</p>
+				<form class="landing-form">
+					<label>
+						<span>Vault base URL</span>
+						<input type="url" name="vault" required placeholder="https://raw.githubusercontent.com/Steffo99/appunti-magistrali/main/">
+					</label>
+					<label>
+						<span>Path of the initial file</span>
+						<input type="text" name="path" placeholder="8 - Crittografia applicata/2 - Comunicazione simmetrica/3 - Indistinguibilità/★ mappa concettuale.canvas">
+					</label>
+					<input type="submit" value="Open">
+				</form>
+				<p>
+					Alternatively, browse an example vault, such as:
+				</p>
+				<ul>
+					<li><a href="./?vault=https%3A%2F%2Fraw.githubusercontent.com%2FSteffo99%2Fappunti-magistrali%2Fmain%2F&path=9 - Algoritmi distribuiti/1 - Problemi/★ problemi.canvas">Steffo's University notes on Distributed Problems</a></li>
+					<li><a href="./?vault=https%3A%2F%2Fraw.githubusercontent.com%2Fobsidianmd%2Fobsidian-help%2Fmaster%2Fen%2F&path=Home.md>">Obsidian's own documentation</a> (no wikilinks)</li>
+				</ul>
+				<h2>
+					Wikilinks are not working!
+				</h2>
+				<p>
+					To resolve Wikilinks, full knowledge of a Vault's contents is required.
+				</p>
+				<p>
+					Obsidian does not include a list of files in a Vault anywhere in it, because it operates under the assumption that this would be trivial to do via the file system.
+				</p>
+				<p>
+					Obsiview, running on the web, does not have this ability, and needs to somehow learn about it.
+				</p>
+				<p>
+					To solve this problem, the <a href="https://github.com/Steffo99/obsidian-file-index"><code>steffo-file-index</code></a> plugin was developed; once installed in a given Vault, and once the <code>steffo-file-index.json</code> file it generates is published, Obsiview will be able to resolve Wikilinks.
+				</p>
+			</div>
+		</template>
 		<template id="template-vault">
 			<style>
 				.vault {

src/elements/browse.mjs

@@ -5,84 +5,174 @@ import {fileDetails, filePath} from "../utils/file.mjs";
  */
 export class BrowseElement extends HTMLBodyElement {
     /**
-     * Parameters to be used to display *things*.
-     * @type {{vault: string, path: string, highlight: string}}
+     * @returns {string|null} The base URL of the current vault.
      */
-    parameters
-
-    /**
-     * Recalculate the value of {@link parameters} using the current {@link window.location}.
-     * @returns {void}
-     */
-    recalculateParameters() {
-        const location = window.location
-        const params = new URLSearchParams(location.search)
-        const vault = params.get("vault")
-        const path = params.get("path")
-        const highlight = location.hash.replace(/^#/, "")
-        this.parameters = {vault, path, highlight}
+    get vault() {
+        return new URLSearchParams(window.location.search).get("vault")
+    }
+    set vault(value) {
+        window.location.replace(this.urlFor({vault: value}))
     }
 
-    urlFor({vault = this.parameters.vault, path = this.parameters.path, highlight = this.parameters.highlight}) {
+    /**
+     * @returns {string} The path of the current displayed file.
+     */
+    get path() {
+        return new URLSearchParams(window.location.search).get("path") || "README.md"
+    }
+    set path(value) {
+        window.location.replace(this.urlFor({path: value}))
+    }
+
+    /**
+     * Determine the URL to reach a certain page, using the current {@link vault} and {@link path} as default, and overwriting them with the function's arguments.
+     * @param vault The base URL of the vault to use.
+     * @param path The file path of the file to display.
+     * @returns {URL} The resulting URL.
+     */
+    urlFor({vault = this.vault, path = this.path}) {
         const location = window.location
         const params = new URLSearchParams(location.search)
         params.set("vault", vault)
         params.set("path", path)
         const url = new URL(location)
         url.search = params.toString()
-        url.hash = highlight
         return url
     }
 
-    // TODO: Add a landing page
+    /**
+     * The landing page element, telling the user how to view a vault.
+     * Can be recreated by {@link recreateLandingElement}.
+     * Mutually exclusive with {@link vaultElement}.
+     * @type {LandingElement|null}
+     */
+    landingElement
+
+    recreateLandingElement() {
+        if(this.landingElement) {
+            this.landingElement.remove()
+            this.landingElement = null
+        }
+        if(this.vaultElement) {
+            this.vaultElement.remove()
+            this.vaultElement = null
+        }
+        if(this.rootDisplayElement) {
+            this.rootDisplayElement.remove()
+            this.rootDisplayElement = null
+        }
+
+        this.vaultElement = document.createElement("x-landing")
+
+        this.appendChild(this.vaultElement)
+    }
 
     /**
      * The vault element, describing to its descendants how to handle various situations.
-     * @type {VaultElement}
+     * Can be recreated by {@link recreateVaultElement}.
+     * Mutually exclusive with {@link landingElement}.
+     * @type {VaultElement|null}
      */
     vaultElement
 
+    /**
+     * Recreate {@link vaultElement} with the current value of {@link vault}.
+     * @returns {void}
+     */
+    recreateVaultElement() {
+        if(this.landingElement) {
+            this.landingElement.remove()
+            this.landingElement = null
+        }
+        if(this.vaultElement) {
+            this.vaultElement.remove()
+            this.vaultElement = null
+        }
+        if(this.rootDisplayElement) {
+            this.rootDisplayElement.remove()
+            this.rootDisplayElement = null
+        }
+
+        this.vaultElement = document.createElement("x-vault")
+        this.vaultElement.base = this.vault
+        this.vaultElement.cooldownMs = 0
+
+        this.appendChild(this.vaultElement)
+    }
+
     /**
      * The title of the page.
+     * Can be recreated by {@link recreateTitleElement}.
      * @type {HTMLHeadingElement}
      */
     titleElement
 
+    /**
+     * The name of this application, displayed if no page is being shown.
+     * @type {string}
+     */
+    static APP_NAME = "Obsiview"
+
+    /**
+     * Recreate {@link titleElement} with the current value of {@link path}.
+     * @returns {void}
+     */
+    recreateTitleElement() {
+        if(this.titleElement) {
+            this.titleElement.remove()
+            this.titleElement = null
+        }
+
+        const vault = this.vault
+
+        let name
+        if(vault === null) {
+            name = this.constructor.APP_NAME
+        }
+        else {
+            name = fileDetails(this.path).name
+        }
+
+        this.titleElement = document.createElement("h1")
+        this.titleElement.innerText = name
+
+        this.appendChild(this.titleElement)
+    }
+
     /**
      * The display element showing the contents of the specified file.
-     * @type {DisplayElement}
+     * Can be recreated by {@link recreateRootDisplayElement}.
+     * Mutually exclusive with {@link landingElement}.
+     * @type {DisplayElement|null}
      */
     rootDisplayElement
 
     /**
-     * Recreate all contents of this element to match the current value of {@link parameters}.
+     * Recreate {@link rootDisplayElement} with the current value of {@link path}.
+     * @returns {void}
      */
-    recreateContents() {
-        if(this.vaultElement) {
-            this.vaultElement.remove()
-            this.vaultElement = null
+    recreateRootDisplayElement() {
+        if(this.rootDisplayElement) {
+            this.rootDisplayElement.remove()
             this.rootDisplayElement = null
         }
 
-        const {name} = fileDetails(this.parameters.path)
-        this.titleElement = document.createElement("h1")
-        this.titleElement.innerText = name
-        this.appendChild(this.titleElement)
-
-        this.vaultElement = document.createElement("x-vault")
-        this.vaultElement.base = this.parameters.vault
-        this.vaultElement.cooldownMs = 0
-
         this.rootDisplayElement = document.createElement("x-display")
-        this.rootDisplayElement.path = this.parameters.path
+        this.rootDisplayElement.path = this.path
         this.rootDisplayElement.slot = "vault-child"
 
         this.vaultElement.appendChild(this.rootDisplayElement)
-        this.appendChild(this.vaultElement)
     }
 
+    // noinspection JSUnusedGlobalSymbols
     connectedCallback() {
-        this.recalculateParameters()
-        this.recreateContents()
+        this.recreateTitleElement()
+        if(this.vault === null) {
+            this.recreateLandingElement()
+        }
+        else {
+            this.recreateVaultElement()
+            this.recreateRootDisplayElement()
+        }
     }
 }

src/elements/index.mjs

@@ -3,3 +3,4 @@ export {MarkdownElement, HashtagElement, WikilinkElement, FrontMatterElement} fr
 export {DisplayElement} from "./display.mjs"
 export {VaultElement} from "./vault.mjs"
 export {BrowseElement} from "./browse.mjs"
+export {LandingElement} from "./landing.mjs"

src/elements/landing.mjs

@@ -0,0 +1,11 @@
+import {CustomElement} from "./base.mjs";
+
+export class LandingElement extends CustomElement {
+    static get template() {
+        return document.getElementById("template-landing")
+    }
+
+    onConnect() {
+        super.onConnect()
+    }
+}

src/elements/vault.mjs

@@ -137,6 +137,9 @@ export class VaultElement extends CustomElement {
      */
     async refetchAppearance() {
         const response = await this.fetchCooldown(".obsidian/appearance.json")
+        if(response.status >= 400) {
+            return
+        }
         const appearance = await response.json()
         const accentColor = appearance.accentColor
         if(accentColor.match(/^#[0-9A-F]{3}$|^#[0-9A-F]{6}$/i)) {
@@ -159,6 +162,7 @@ export class VaultElement extends CustomElement {
         const response = await this.fetchCooldown("steffo-file-index.json")
         if(response.status >= 400) {
             this.fileIndex = null
+            return
         }
         this.fileIndex = await response.json()
         this.#fileIndexQueue.forEach(resolve => resolve(undefined))

src/index.mjs

@@ -9,9 +9,12 @@ import {
     NodeTextElement,
     FrontMatterElement,
     MarkdownElement,
-    VaultElement, BrowseElement
+    VaultElement,
+    BrowseElement,
+    LandingElement,
 } from "./elements/index.mjs";
 
+customElements.define("x-landing", LandingElement)
 customElements.define("x-vault", VaultElement)
 customElements.define("x-display", DisplayElement)
 customElements.define("x-canvas", CanvasElement)