ui(components): New Dialog and Modal components for ui-next (#4772)

Co-authored-by: sedghi <ar.sedghi@gmail.com>

platform/core/src/extensions/ExtensionManager.ts

@@ -382,6 +382,10 @@ export default class ExtensionManager extends PubSubService {
     return this.dataSourceMap[dataSourceName];
   };
 
+  getDataSourceInstance = dataSourceName => {
+    return this.dataSourceMap[dataSourceName][0];
+  };
+
   getActiveDataSource = () => {
     return this.dataSourceMap[this.activeDataSource];
   };
@@ -409,6 +413,29 @@ export default class ExtensionManager extends PubSubService {
     return this.getDataSourceDefinition(this.activeDataSource);
   };
 
+  /**
+   * Gets a formatted list of data sources suitable for UI display/selection.
+   * Only returns data sources that support STOW or have a WADO root.
+   * @returns Array of data source options with value, label, and placeholder
+   */
+  getDataSourcesForUI = () => {
+    // If multi-select export is not allowed, return empty list
+    if (this._appConfig?.allowMultiSelectExport === false) {
+      return [];
+    }
+
+    return Object.keys(this.dataSourceMap)
+      .filter(ds => {
+        const configuration = this.dataSourceDefs[ds]?.configuration;
+        return configuration?.supportsStow ?? configuration?.wadoRoot;
+      })
+      .map(ds => ({
+        value: ds,
+        label: ds,
+        placeHolder: ds,
+      }));
+  };
+
   /**
    * @private
    * @param {string} moduleType