[24.0] Do not save workflow on Run without user confirmation

This adds a modal when the user runs a workflow with changes, that asks for user confirmation on whether to proceed without saving changes or to save changes and then proceed. Currently, we _always_ save the workflow when it is run (even if there are no changes at all).

Fixes https://github.com/galaxyproject/galaxy/issues/17903

client/src/components/Workflow/Editor/Index.vue

@@ -13,6 +13,7 @@
             @onRefactor="onRefactor"
             @onShow="hideModal" />
         <MessagesModal :title="messageTitle" :message="messageBody" :error="messageIsError" @onHidden="resetMessage" />
+        <SaveChangesModal :nav-url.sync="navUrl" :show-modal.sync="showSaveChangesModal" @on-proceed="onNavigate" />
         <b-modal
             v-model="showSaveAsModal"
             title="Save As a New Workflow"
@@ -167,7 +168,7 @@
 <script>
 import { Toast } from "composables/toast";
 import { storeToRefs } from "pinia";
-import Vue, { computed, onUnmounted, ref, unref } from "vue";
+import Vue, { computed, nextTick, onUnmounted, ref, unref } from "vue";
 
 import { getUntypedWorkflowParameters } from "@/components/Workflow/Editor/modules/parameters";
 import { ConfirmDialog } from "@/composables/confirmDialog";
@@ -192,6 +193,7 @@ import WorkflowLint from "./Lint.vue";
 import MessagesModal from "./MessagesModal.vue";
 import WorkflowOptions from "./Options.vue";
 import RefactorConfirmationModal from "./RefactorConfirmationModal.vue";
+import SaveChangesModal from "./SaveChangesModal.vue";
 import StateUpgradeModal from "./StateUpgradeModal.vue";
 import WorkflowGraph from "./WorkflowGraph.vue";
 import MarkdownEditor from "@/components/Markdown/MarkdownEditor.vue";
@@ -204,6 +206,7 @@ export default {
     components: {
         MarkdownEditor,
         FlexPanel,
+        SaveChangesModal,
         StateUpgradeModal,
         ToolPanel,
         FormDefault,
@@ -337,6 +340,8 @@ export default {
             showSaveAsModal: false,
             transform: { x: 0, y: 0, k: 1 },
             graphOffset: { left: 0, top: 0, width: 0, height: 0 },
+            showSaveChangesModal: false,
+            navUrl: "",
         };
     },
     computed: {
@@ -677,14 +682,21 @@ export default {
             const runUrl = `/workflows/run?id=${this.id}`;
             this.onNavigate(runUrl);
         },
-        async onNavigate(url) {
+        async onNavigate(url, forceSave = false, ignoreChanges = false) {
             if (this.isNewTempWorkflow) {
                 await this.onCreate();
-            } else {
-                await this.onSave(true);
+            } else if (this.hasChanges && !forceSave && !ignoreChanges) {
+                // if there are changes, prompt user to save or discard or cancel
+                this.navUrl = url;
+                this.showSaveChangesModal = true;
+                return;
+            } else if (forceSave) {
+                // when forceSave is true, save the workflow before navigating
+                await this.onSave();
             }
 
             this.hasChanges = false;
+            await nextTick();
             this.$router.push(url);
         },
         onSave(hideProgress = false) {

client/src/components/Workflow/Editor/SaveChangesModal.vue

@@ -0,0 +1,97 @@
+<script setup lang="ts">
+import { library } from "@fortawesome/fontawesome-svg-core";
+import { faSave, faTimes, faTrash } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
+import { BButton, BModal } from "bootstrap-vue";
+import { ref } from "vue";
+
+import localize from "@/utils/localization";
+
+library.add(faSave, faTimes, faTrash);
+
+interface Props {
+    /** Show the save changes modal */
+    showModal: boolean;
+    /** The URL to navigate to before saving/ignoring changes */
+    navUrl: string;
+}
+
+const props = withDefaults(defineProps<Props>(), {
+    showModal: false,
+});
+
+const busy = ref(false);
+
+const emit = defineEmits<{
+    /** Proceed with or without saving the changes */
+    (e: "on-proceed", url: string, forceSave: boolean, ignoreChanges: boolean): void;
+    /** Update the nav URL prop */
+    (e: "update:nav-url", url: string): void;
+    /** Update the show modal boolean prop */
+    (e: "update:show-modal", showModal: boolean): void;
+}>();
+
+const title = localize("You have unsaved changes. Do you want to save them before proceeding?");
+const body = localize(
+    "Click 'Save' to save your changes and proceed, 'Don't Save' to discard them and proceed, or 'Cancel' to return to the editor."
+);
+
+const buttonTitles = {
+    cancel: localize("Do not run proceed and return to editor"),
+    dontSave: localize("Discard changes and proceed"),
+    save: localize("Save changes and proceed"),
+};
+
+function closeModal() {
+    emit("update:show-modal", false);
+    emit("update:nav-url", "");
+}
+
+function dontSave() {
+    busy.value = true;
+    emit("on-proceed", props.navUrl, false, true);
+}
+
+function saveChanges() {
+    busy.value = true;
+    closeModal();
+    emit("on-proceed", props.navUrl, true, false);
+}
+</script>
+
+<template>
+    <BModal :title="title" :visible="props.showModal" @close="closeModal" @hide="closeModal">
+        <div>
+            {{ body }}
+        </div>
+        <template v-slot:modal-footer>
+            <BButton
+                v-b-tooltip.noninteractive.hover
+                :title="buttonTitles['cancel']"
+                variant="secondary"
+                :disabled="busy"
+                @click="closeModal">
+                <FontAwesomeIcon :icon="faTimes" />
+                {{ localize("Cancel") }}
+            </BButton>
+            <BButton
+                v-b-tooltip.noninteractive.hover
+                :title="buttonTitles['dontSave']"
+                variant="danger"
+                :disabled="busy"
+                @click="dontSave">
+                <FontAwesomeIcon :icon="faTrash" />
+                {{ localize("Don't Save") }}
+            </BButton>
+            <BButton
+                v-b-tooltip.noninteractive.hover
+                :title="buttonTitles['save']"
+                variant="primary"
+                :disabled="busy"
+                @click="saveChanges">
+                <FontAwesomeIcon :icon="faSave" />
+                {{ localize("Save") }}
+            </BButton>
+        </template>
+    </BModal>
+</template>