A matrix display component with copy button that copys as code.

webapp/src/components/ui/matrixDisplay.vue

@@ -0,0 +1,157 @@
+<template>
+  <div class="matrix-container uk-inline">
+    <div class="matrix-wrapper">
+      <div class="matrix-bracket" :style="bracketSize">(</div>
+
+      <div class="matrix-grid">
+        <div v-for="(row, i) in always2DMatrix" :key="i" class="matrix-row">
+          <span v-for="(cell, j) in row" :key="j" class="matrix-cell">
+            {{ cell }}
+          </span>
+        </div>
+      </div>
+
+      <div class="matrix-bracket" :style="bracketSize">)</div>
+    </div>
+
+    <button
+      class="copy-button"
+      :class="{ success: copied }"
+      :title="'Copy as Python list'"
+      @click="copyMatrix"
+    >
+      <span class="material-symbols-outlined">{{ copySymbol }}</span>
+    </button>
+  </div>
+</template>
+
+<script>
+export default {
+  name: "MatrixDisplay",
+  props: {
+    matrix: {
+      type: Array,
+      required: true,
+    },
+    bracketHeight: {
+      type: Number,
+      default: 3,
+    },
+  },
+  data() {
+    return {
+      copied: false,
+    };
+  },
+  computed: {
+    always2DMatrix() {
+      if (!this.matrix || this.matrix.length === 0) return [];
+      if (!Array.isArray(this.matrix[0])) {
+        return [this.matrix];
+      }
+      return this.matrix;
+    },
+    copySymbol() {
+      return this.copied ? "check" : "content_copy";
+    },
+    bracketSize() {
+      return { fontSize: `${this.bracketHeight}rem`, lineHeight: "1" };
+    },
+  },
+  methods: {
+    copyMatrix() {
+      const pythonFormat = JSON.stringify(this.matrix)
+        .replaceAll("],", "], ")
+        .replaceAll(",", ", ");
+      this.copyText(pythonFormat);
+    },
+    /**
+     * Cannot use modern text copy as we don't have https.
+     *
+     * This uses the deprecated execCommand as navigator.clipboard.writeText() is not
+     * available.
+     */
+    copyText(text) {
+      const textarea = document.createElement("textarea");
+      textarea.value = text;
+      textarea.style.position = "fixed";
+      textarea.style.opacity = "0";
+      document.body.appendChild(textarea);
+      textarea.focus();
+      textarea.select();
+      try {
+        document.execCommand("copy");
+        this.copied = true;
+        setTimeout(() => (this.copied = false), 1000);
+      } catch (err) {
+        console.error("Copy failed:", err);
+      } finally {
+        document.body.removeChild(textarea);
+      }
+    },
+  },
+};
+</script>
+
+<style scoped>
+.matrix-container {
+  display: inline-block;
+  padding: 8px 12px;
+  border-radius: 6px;
+  position: relative;
+}
+
+.matrix-wrapper {
+  display: flex;
+  align-items: center;
+}
+
+.matrix-bracket {
+  display: flex;
+  align-items: center;
+  padding: 0 0.25rem;
+}
+
+.matrix-grid {
+  display: inline-flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+.matrix-row {
+  display: flex;
+}
+
+.matrix-cell {
+  padding: 2px 6px;
+  min-width: 24px;
+  text-align: center;
+}
+
+.copy-button {
+  position: absolute;
+  top: -5px;
+  right: -20px;
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  padding: 4px;
+  margin-left: 8px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #666;
+  transition: color 0.2s ease;
+}
+
+.copy-button:hover {
+  color: #000;
+}
+.copy-button {
+  transition: background-color 0.3s ease, color 0.3s ease;
+}
+
+.copy-button.success {
+  color: #4caf50;
+}
+</style>