export hpgl load from folder

webui/static/app.js

@@ -23,7 +23,8 @@
     scaleToBounds: document.getElementById('btnScaleToBounds'),
     print: document.getElementById('btnPrint'),
     checkPlotter: document.getElementById('btnCheckPlotter'),
-    generateHpgl: document.getElementById('btnGenerateHpgl')
+    generateHpgl: document.getElementById('btnGenerateHpgl'),
+    exportHpgl: document.getElementById('btnExportHpgl')
   };
   const tabFile = document.getElementById('tabFile');
   const tabText = document.getElementById('tabText');
@@ -33,6 +34,7 @@
   const fontSelect = document.getElementById('fontSelect');
   const textSize = document.getElementById('textSize');
   const textMessage = document.getElementById('textMessage');
+  const hpglFolderSelect = document.getElementById('hpglFolderSelect');
 
   function setMessage(el, text, type) {
     el.textContent = text || '';
@@ -93,7 +95,7 @@
       });
   }
 
-  var transformPrintButtons = ['flip', 'rotate90', 'rotate180', 'scaleUp', 'scaleDown', 'centralize', 'scaleToBounds', 'print'];
+  var transformPrintButtons = ['flip', 'rotate90', 'rotate180', 'scaleUp', 'scaleDown', 'centralize', 'scaleToBounds', 'print', 'exportHpgl'];
 
   function setLoaded(loaded) {
     if (loaded) {
@@ -264,9 +266,52 @@
     tabText.classList.toggle('active', !isFile);
     if (panelFile) panelFile.classList.toggle('hidden', !isFile);
     if (panelText) panelText.classList.toggle('hidden', isFile);
+    if (isFile && hpglFolderSelect && hpglFolderSelect.options.length <= 1) loadHpglFiles();
     if (!isFile && fontSelect && fontSelect.options.length <= 1) loadFonts();
   }
 
+  function loadHpglFiles() {
+    if (!hpglFolderSelect) return;
+    fetch('/api/hpgl_files')
+      .then(function (r) { return r.json(); })
+      .then(function (d) {
+        var opts = hpglFolderSelect.querySelectorAll('option');
+        for (var i = opts.length - 1; i >= 1; i--) opts[i].remove();
+        (d.files || []).forEach(function (f) {
+          var o = document.createElement('option');
+          o.value = f;
+          o.textContent = f;
+          hpglFolderSelect.appendChild(o);
+        });
+      })
+      .catch(function () {});
+  }
+
+  if (hpglFolderSelect) {
+    hpglFolderSelect.addEventListener('change', function () {
+      var filename = (this.value || '').trim();
+      if (!filename) return;
+      setMessage(printMessage, '');
+      fetch('/api/load_hpgl', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ filename: filename })
+      })
+        .then(function (r) {
+          return r.json().then(function (d) {
+            if (!r.ok) throw new Error(d.error || 'Load failed');
+            return d;
+          });
+        })
+        .then(function () {
+          refreshStatus();
+        })
+        .catch(function (e) {
+          setMessage(printMessage, e.message || 'Load failed', 'error');
+        });
+    });
+  }
+
   function loadFonts() {
     if (!fontSelect) return;
     fetch('/api/fonts')
@@ -287,6 +332,12 @@
   if (tabFile) tabFile.addEventListener('click', function () { showTab('file'); });
   if (tabText) tabText.addEventListener('click', function () { showTab('text'); });
 
+  if (buttons.exportHpgl) {
+    buttons.exportHpgl.addEventListener('click', function () {
+      window.location.href = '/api/download_hpgl';
+    });
+  }
+
   if (buttons.generateHpgl && textInput && fontSelect) {
     buttons.generateHpgl.addEventListener('click', function () {
       var text = (textInput.value || '').trim();
@@ -324,6 +375,7 @@
   }
 
   refreshStatus();
+  loadHpglFiles();
   updatePlotterInfo();
   setInterval(updatePlotterInfo, 10000);
 })();