From 15be7daab1d6304c34dd70bb31f9913d84a48662 Mon Sep 17 00:00:00 2001
From: wass <wassim.filali@gmail.com>
Date: Sat, 8 Jun 2024 15:28:44 +0200
Subject: [PATCH] fallback style focus for foreign objects

---
 src/components/panzoom/lib_panzoommodal.js | 14 +++++++
 src/components/panzoom/lib_svg_filters.js  |  2 +-
 src/components/panzoom/lib_svg_utils.js    | 49 ++++++++++++++--------
 src/components/panzoom/panzoommodal.astro  |  3 +-
 4 files changed, 48 insertions(+), 20 deletions(-)

diff --git a/src/components/panzoom/lib_panzoommodal.js b/src/components/panzoom/lib_panzoommodal.js
index d79a3f1..afbfccf 100644
--- a/src/components/panzoom/lib_panzoommodal.js
+++ b/src/components/panzoom/lib_panzoommodal.js
@@ -7,6 +7,19 @@ const zoomOptions = {
   //autocenter:true
 }
 
+function addFocusStyles(shadowRoot) {
+  if (!shadowRoot.getElementById('glowStyles')) {
+      const style = document.createElement('style');
+      style.id = 'focusStyles';
+      style.textContent = `
+          .focus-effect {
+              font-weight: bold;
+          }
+      `;
+      shadowRoot.appendChild(style);
+  }
+}
+
 async function appendShadowSVG(center,svg){
   //cannot detatch a shadow root, so check existing before creation
   let shadowRoot = center.shadowRoot
@@ -15,6 +28,7 @@ async function appendShadowSVG(center,svg){
   }
   const div = document.createElement("div")//needed for the panzoom as it takes the parent
   shadowRoot.appendChild(div)
+  addFocusStyles(shadowRoot)
   let new_svg
   const clone_fails_with_SVGjs = true
   if(clone_fails_with_SVGjs){
diff --git a/src/components/panzoom/lib_svg_filters.js b/src/components/panzoom/lib_svg_filters.js
index ac813a4..717a4ba 100644
--- a/src/components/panzoom/lib_svg_filters.js
+++ b/src/components/panzoom/lib_svg_filters.js
@@ -109,7 +109,6 @@ function startAnimation(svg,element,filter){
     anim.beginElement();
     if(!(anim.getAttribute("repeatDur") == "indefinite")){
         const duration_ms = dur_to_ms(anim.getAttribute("dur"));
-        console.log(`will detach after ${duration_ms} ms`);
         setTimeout(()=>{
             detachFilter(element,filter);
         },duration_ms);
@@ -118,6 +117,7 @@ function startAnimation(svg,element,filter){
 
 function glow(svg, element, color, dur = 500){
     const glow = createGlowFilter(svg,color,dur)
+    console.log(`playing glow animation for ${dur} ms`);
     startAnimation(svg,element,glow)
     setTimeout(()=>removeFilter(svg,glow),dur+100)
 }
diff --git a/src/components/panzoom/lib_svg_utils.js b/src/components/panzoom/lib_svg_utils.js
index 0fdab5d..2f569ad 100644
--- a/src/components/panzoom/lib_svg_utils.js
+++ b/src/components/panzoom/lib_svg_utils.js
@@ -63,25 +63,40 @@ async function svg_text_focus(modal_content,svg,text,pzref){
   let text_hits = text_array.filter(obj => obj.node.innerHTML == text);
   if(text_hits.length > 0){
     let targetText = text_hits[0]
-    if(typeof targetText.bbox === "function"){
-      const bbox = targetText.bbox();
-      let box_center_x = bbox.x + bbox.width / 2;
-      let box_center_y = bbox.y + bbox.height / 2;
-      const svg_cx = svg.getAttribute("width").replace(/px$/, '')/2
-      const svg_cy = svg.getAttribute("height").replace(/px$/, '')/2
-      //console.log(`svg center (${svg_cx},${svg_cy})`)
-      const shift_x = svg_cx - box_center_x
-      const shift_y = svg_cy - box_center_y
-      //console.log(`moveTo (${shift_x},${shift_y})`)
-      setTimeout(()=>{pzref.smoothMoveTo(shift_x, shift_y)}, 400)
-      setTimeout(()=>{pzref.smoothZoom(svg_cx, svg_cy, 1.4)}, 800)
-      setTimeout(()=>{glow(svg, targetText.node, '#0f0');},1500)
+    let bbox
+    if(targetText.node.namespaceURI == "http://www.w3.org/2000/svg"){
+      bbox = targetText.bbox()
+    }else if(targetText.node.namespaceURI == "http://www.w3.org/1999/xhtml"){
+      const node_bbox = targetText.node.getBoundingClientRect()
+      // Adjust coordinates to SVG coordinate space
+      let svgRect = svg.getBoundingClientRect();
+      bbox = {
+          x: node_bbox.left - svgRect.left,
+          y: node_bbox.top - svgRect.top,
+          width: node_bbox.width,
+          height: node_bbox.height
+      };
+    }else{
+      console.warn(`not handled namespaceURI ${targetText.node.namespaceURI}`)
+      return
     }
-    else{
-      console.warn(`targetText not an SVG element has no bbox function`)
-      console.log(targetText)
+    console.log(bbox)
+    let box_center_x = bbox.x + bbox.width / 2;
+    let box_center_y = bbox.y + bbox.height / 2;
+    const svg_cx = svg.getAttribute("width").replace(/px$/, '')/2
+    const svg_cy = svg.getAttribute("height").replace(/px$/, '')/2
+    console.log(`svg center (${svg_cx},${svg_cy})`)
+    const shift_x = svg_cx - box_center_x
+    const shift_y = svg_cy - box_center_y
+    console.log(`moveTo (${shift_x},${shift_y})`)
+    setTimeout(()=>{pzref.smoothMoveTo(shift_x, shift_y)}, 400)
+    setTimeout(()=>{pzref.smoothZoom(svg_cx, svg_cy, 1.4)}, 800)
+    if(targetText.node.namespaceURI == "http://www.w3.org/2000/svg"){
+      setTimeout(()=>{glow(svg, targetText.node, '#0f0');},1500)
+    }else{
+      setTimeout(()=>{targetText.node.classList.add("focus-effect");},1500)
+      setTimeout(()=>{targetText.node.classList.remove("focus-effect");},2000)
     }
-
   }
 }
 
diff --git a/src/components/panzoom/panzoommodal.astro b/src/components/panzoom/panzoommodal.astro
index 6a4a911..fa18935 100644
--- a/src/components/panzoom/panzoommodal.astro
+++ b/src/components/panzoom/panzoommodal.astro
@@ -80,8 +80,7 @@ const {url} = Astro.props as Props;
   cursor: pointer;
   background:#ddd;
 }
-.modal-header:hover > span{
+.modal-header:hover > span.close-x{
   color: #000;
-
 }
 </style>