1 files changed, 65 insertions, 0 deletions
diff --git a/content/sworldcat_library_holdings/library_holdings.js b/content/sworldcat_library_holdings/library_holdings.js
new file mode 100644
index 0000000..3a30b2b
--- /dev/null
+++ b/content/sworldcat_library_holdings/library_holdings.js
@@ -0,0 +1,65 @@
+/*
+	Copyright © 2021 jahoti (jahoti@tilde.team)
+	
+	Licensed under the Apache License, Version 2.0 (the "License");
+	you may not use this file except in compliance with the License.
+	You may obtain a copy of the License at
+	
+	   http://www.apache.org/licenses/LICENSE-2.0
+	
+	Unless required by applicable law or agreed to in writing, software
+	distributed under the License is distributed on an "AS IS" BASIS,
+	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+	See the License for the specific language governing permissions and
+	limitations under the License.
+*/
+
+var pathParts = location.pathname.split('/'), itemRef = pathParts[pathParts.length - 1];
+
+// Generate a function which, when invoked, loads the catalog holdings starting at i (one-indexed) focused on loc
+function generateGoTo(i, set_loc) {
+	return function () {
+		; // If this is a new search, "set_loc" won't be set; set it
+		var xhr = new content.XMLHttpRequest(), loc = set_loc || encodeURIComponent(locInput.value);
+		xhr.onreadystatechange = function () {
+			if (this.readyState === 4) {
+				if (this.status === 200) {
+					retrieved.innerHTML = this.responseText;
+					
+					var i, node = document.getElementById('libslocator');
+					node.parentNode.removeChild(node);
+					for (node of retrieved.querySelectorAll('a[href^="javascript:findLibs(\'\', "]')) {
+						i = parseInt(node.href.split(',', 2)[1]);
+						node.onclick = generateGoTo(i, loc);
+					}
+				}
+				else alert('Search failed: response code ' + this.status);
+			}
+		}
+		
+		xhr.open('GET', 'https://www.worldcat.org/wcpa/servlet/org.oclc.lac.ui.ajax.ServiceServlet?wcoclcnum=' + itemRef + '&start_holding='
+				+ i + '&serviceCommand=holdingsdata&loc=' + loc, true);
+		xhr.send();
+		return false; // Make sure the browser doesn't try to submit any holding form
+	};
+}
+
+
+var retriever = document.querySelector('.retrieving'), retrieved = document.getElementById('donelocator');
+
+var locForm = document.createElement('form'), locLabel = document.createElement('label'), locInput = document.createElement('input'),
+	locSubmit = document.createElement('input');
+
+locForm.appendChild(locLabel);
+locForm.appendChild(locInput);
+locForm.appendChild(locSubmit);
+
+locInput.name = locLabel.htmlFor = 'cat_location';
+locInput.type = 'text';
+locInput.required = 'yes';
+locLabel.innerText = 'Find copies closest to: ';
+locSubmit.value = 'Go';
+locSubmit.type = 'submit';
+locForm.onsubmit = generateGoTo(1);
+
+retriever.parentNode.replaceChild(locForm, retriever);
+\ No newline at end of file