Reworked the back button to be strictly owned/injected by the WM. Back

buttons are now tied to callback functions per the window upon
registration of the child.

Also, added a share button. This one belongs to the blog.

src/assets/css/phosphor.css

@@ -487,14 +487,13 @@ body { animation: flicker 12s infinite; }
 .project-tag.active     { background: var(--p); border-color: var(--p); color: #000; }
 .tag-count              { opacity: 0.65; font-size: 10px; }
 
-/* Back button inside post view */
-.blog-back,
-.project-back {
+/* Back / share buttons injected into sub-page views */
+.win-back,
+.win-share {
   appearance: none;
   -webkit-appearance: none;
   border: 1px solid var(--p-dim);
   background: transparent;
-  color: var(--p);
   font-family: var(--font-body);
   font-size: 13px;
   padding: 2px 12px;
@@ -503,8 +502,11 @@ body { animation: flicker 12s infinite; }
   display: inline-block;
   margin-bottom: 4px;
 }
-.blog-back:hover,
-.project-back:hover { background: var(--p); color: #000; border-color: var(--p); }
+.win-back               { color: var(--p); margin-right: 6px; }
+.win-back:hover         { background: var(--p); color: #000; border-color: var(--p); }
+.win-share              { color: var(--p-dim); }
+.win-share:hover,
+.win-share.copied       { border-color: var(--p); color: var(--p); }
 
 /* Post metadata line */
 .post-meta {

src/assets/js/blog.js

@@ -1,21 +1,32 @@
 (function () {
   "use strict";
 
-  function syncWindow(container) {
-    container.scrollTop = 0;
-    var win = container.closest(".window");
-    if (win && win._syncMore) win._syncMore();
-  }
+  function injectShare(container, url) {
+    var parts = url.replace(/\/$/, "").split("/").filter(Boolean);
+    var type  = parts[1]; // "blog" or "projects"
+    var slug  = parts[2];
+    if (type !== "blog" && type !== "projects") return;
 
-  function openSubPage(url, container, backUrl) {
-    WM.loadFragment(url, container, function () {
-      var back = document.createElement("button");
-      back.className = "blog-back";
-      back.dataset.backUrl = backUrl;
-      back.textContent = "\u2190 back";
-      container.insertBefore(back, container.firstChild);
-      syncWindow(container);
+    var shareUrl = window.location.origin + "/#" + type + "/" + slug;
+    var btn = document.createElement("button");
+    btn.className = "win-share";
+    btn.textContent = "share";
+    btn.addEventListener("click", function () {
+      navigator.clipboard.writeText(shareUrl).then(function () {
+        btn.textContent = "copied!";
+        btn.classList.add("copied");
+        setTimeout(function () {
+          btn.textContent = "share";
+          btn.classList.remove("copied");
+        }, 2000);
+      }).catch(function () {
+        window.prompt("Copy this link:", shareUrl);
+      });
     });
+
+    var back = container.querySelector(".win-back");
+    if (back) back.insertAdjacentElement("afterend", btn);
+    else container.insertBefore(btn, container.firstChild);
   }
 
   document.addEventListener("click", function (e) {
@@ -24,8 +35,9 @@
     var postLink = e.target.closest(".blog-open-post");
     if (postLink) {
       e.preventDefault();
-      var container = postLink.closest(".window-content");
-      openSubPage(postLink.dataset.postUrl, container, "/fragments/blog/");
+      WM.navigate(postLink.closest(".window-content"), postLink.dataset.postUrl, "/fragments/blog/", function (c) {
+        injectShare(c, postLink.dataset.postUrl);
+      });
       return;
     }
 
@@ -33,17 +45,8 @@
     var projLink = e.target.closest(".project-open-item");
     if (projLink) {
       e.preventDefault();
-      var container = projLink.closest(".window-content");
-      openSubPage(projLink.dataset.projectUrl, container, "/fragments/projects/");
-      return;
-    }
-
-    // Back button (shared by blog and projects)
-    var backBtn = e.target.closest(".blog-back");
-    if (backBtn) {
-      var container = backBtn.closest(".window-content");
-      WM.loadFragment(backBtn.dataset.backUrl, container, function () {
-        syncWindow(container);
+      WM.navigate(projLink.closest(".window-content"), projLink.dataset.projectUrl, "/fragments/projects/", function (c) {
+        injectShare(c, projLink.dataset.projectUrl);
       });
       return;
     }
@@ -77,4 +80,20 @@
     }
 
   });
+
+  // Hash-based deep linking: /#blog/<slug> or /#projects/<slug>
+  document.addEventListener("wm:ready", function () {
+    var hash = window.location.hash.slice(1);
+    if (!hash) return;
+    var slash = hash.indexOf("/");
+    if (slash === -1) return;
+    var type = hash.slice(0, slash);
+    var slug = hash.slice(slash + 1);
+    if (!slug || (type !== "blog" && type !== "projects")) return;
+    var fragUrl = "/fragments/" + type + "/" + slug + "/";
+    WM.showAt("win-" + type, fragUrl, "/fragments/" + type + "/", function (c) {
+      injectShare(c, fragUrl);
+    });
+  });
+
 }());

src/assets/js/wm.js

@@ -35,6 +35,39 @@ const WM = (() => {
 
   const mobile = () => window.matchMedia("(pointer: coarse)").matches;
 
+  /*  Sub-page navigation  */
+
+  function navigate(container, url, backUrl, onDone) {
+    loadFragment(url, container, () => {
+      if (backUrl) {
+        const back = document.createElement("button");
+        back.className = "win-back";
+        back.dataset.backUrl = backUrl;
+        back.textContent = "\u2190 back";
+        container.insertBefore(back, container.firstChild);
+      }
+      if (onDone) onDone(container);
+      container.scrollTop = 0;
+      const win = container.closest(".window");
+      if (win && win._syncMore) win._syncMore();
+    });
+  }
+
+  function showAt(id, url, backUrl, onDone) {
+    const s = state.get(id);
+    if (!s) return;
+    s.contentLoaded = true;
+    s.el.classList.remove("hidden");
+    s.hidden = false;
+    focusEl(s.el);
+    const contentEl = s.el.querySelector(".window-content");
+    if (contentEl) navigate(contentEl, url, backUrl, onDone);
+    requestAnimationFrame(() => {
+      clampToArea(s.el);
+      if (s.el._syncMore) s.el._syncMore();
+    });
+  }
+
   /*  Init  */
 
   function init() {
@@ -42,9 +75,16 @@ const WM = (() => {
     setupIcons();
     document.addEventListener("mousemove", onMove);
     document.addEventListener("mouseup",   onUp);
+    document.addEventListener("click", e => {
+      const btn = e.target.closest(".win-back");
+      if (!btn) return;
+      const container = btn.closest(".window-content");
+      if (container) navigate(container, btn.dataset.backUrl, null);
+    });
     // Focus topmost visible window on load
     const visible = [...state.values()].filter(s => !s.hidden);
     if (visible.length) focusEl(visible[visible.length - 1].el);
+    document.dispatchEvent(new CustomEvent("wm:ready"));
   }
 
   /*  Build and inject window chrome  */
@@ -302,5 +342,5 @@ const WM = (() => {
 
   document.addEventListener("DOMContentLoaded", init);
 
-  return { show, hide, toggle, focus, loadFragment };
+  return { show, hide, toggle, focus, loadFragment, navigate, showAt };
 })();