1 files changed, 83 insertions, 0 deletions
diff --git a/skins/common/history.js b/skins/common/history.js
new file mode 100644
index 00000000..57e61849
--- /dev/null
+++ b/skins/common/history.js
@@ -0,0 +1,83 @@
+function historyRadios(parent) {
+	var inputs = parent.getElementsByTagName('input');
+	var radios = [];
+	for (var i = 0; i < inputs.length; i++) {
+		if (inputs[i].name == "diff" || inputs[i].name == "oldid") {
+			radios[radios.length] = inputs[i];
+		}
+	}
+	return radios;
+}
+
+// check selection and tweak visibility/class onclick
+function diffcheck() {
+	var dli = false; // the li where the diff radio is checked
+	var oli = false; // the li where the oldid radio is checked
+	var hf = document.getElementById('pagehistory');
+	if (!hf) {
+		return true;
+	}
+	var lis = hf.getElementsByTagName('li');
+	for (var i=0;i<lis.length;i++) {
+		var inputs = historyRadios(lis[i]);
+		if (inputs[1] && inputs[0]) {
+			if (inputs[1].checked || inputs[0].checked) { // this row has a checked radio button
+				if (inputs[1].checked && inputs[0].checked && inputs[0].value == inputs[1].value) {
+					return false;
+				}
+				if (oli) { // it's the second checked radio
+					if (inputs[1].checked) {
+						oli.className = "selected";
+						return false;
+					}
+				} else if (inputs[0].checked) {
+					return false;
+				}
+				if (inputs[0].checked) {
+					dli = lis[i];
+				}
+				if (!oli) {
+					inputs[0].style.visibility = 'hidden';
+				}
+				if (dli) {
+					inputs[1].style.visibility = 'hidden';
+				}
+				lis[i].className = "selected";
+				oli = lis[i];
+			}  else { // no radio is checked in this row
+				if (!oli) {
+					inputs[0].style.visibility = 'hidden';
+				} else {
+					inputs[0].style.visibility = 'visible';
+				}
+				if (dli) {
+					inputs[1].style.visibility = 'hidden';
+				} else {
+					inputs[1].style.visibility = 'visible';
+				}
+				lis[i].className = "";
+			}
+		}
+	}
+	return true;
+}
+
+// page history stuff
+// attach event handlers to the input elements on history page
+function histrowinit() {
+	var hf = document.getElementById('pagehistory');
+	if (!hf) {
+		return;
+	}
+	var lis = hf.getElementsByTagName('li');
+	for (var i = 0; i < lis.length; i++) {
+		var inputs = historyRadios(lis[i]);
+		if (inputs[0] && inputs[1]) {
+			inputs[0].onclick = diffcheck;
+			inputs[1].onclick = diffcheck;
+		}
+	}
+	diffcheck();
+}
+
+hookEvent("load", histrowinit);