Added copy pastec

dev/copy paste/Codex AG/src/components/selection-toolbar/selection-toolbar.js

@@ -0,0 +1,69 @@
+const { inject, computed } = Vue;
+
+export default {
+    name: 'SelectionToolbar',
+    setup() {
+        const appState = inject('appState');
+
+        const visible = computed(() => appState.selectedCells.value.size > 0);
+        const count = computed(() => appState.selectedCells.value.size);
+        const hasClipboard = computed(() => !!appState.clipboard.value);
+
+        return {
+            ...appState,
+            visible,
+            count,
+            hasClipboard
+        };
+    },
+    template: `
+    <transition
+      appear
+      enter-active-class="animated bounceInUp"
+      leave-active-class="animated bounceOutDown"
+    >
+      <div v-if="visible" class="selection-toolbar-root">
+        <div class="selection-toolbar-content shadow-4">
+          <div class="selection-toolbar-count text-weight-bold">
+            {{ count }} selected
+          </div>
+          <q-separator vertical inset class="q-mx-sm" style="opacity: 0.2" />
+          <div class="selection-toolbar-actions">
+            <q-btn
+              flat
+              round
+              dense
+              color="primary"
+              icon="content_copy"
+              @click="copySelectedCells"
+            >
+              <q-tooltip>Copy (Ctrl+C)</q-tooltip>
+            </q-btn>
+            <q-btn
+              flat
+              round
+              dense
+              color="primary"
+              icon="content_paste"
+              :disabled="!hasClipboard"
+              @click="pasteToSelectedCells"
+            >
+              <q-tooltip>Paste (Ctrl+V)</q-tooltip>
+            </q-btn>
+            <q-btn
+              flat
+              round
+              dense
+              color="primary"
+              icon="close"
+              @click="clearSelection"
+              class="q-ml-sm"
+            >
+              <q-tooltip>Clear Selection (Esc)</q-tooltip>
+            </q-btn>
+          </div>
+        </div>
+      </div>
+    </transition>
+  `
+};