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authorWu Cheng-Han2015-05-04 15:53:29 +0800
committerWu Cheng-Han2015-05-04 15:53:29 +0800
commit4b0ca55eb79e963523eb6c8197825e9e8ae904e2 (patch)
tree574f3923af77b37b41dbf1b00bcd7827ef724a28 /public/vendor/codemirror/addon/selection/active-line.js
parent61eb11d23c65c9e5c493c67d055f785cbec139e2 (diff)
First commit, version 0.2.7
Diffstat (limited to 'public/vendor/codemirror/addon/selection/active-line.js')
-rwxr-xr-xpublic/vendor/codemirror/addon/selection/active-line.js71
1 files changed, 71 insertions, 0 deletions
diff --git a/public/vendor/codemirror/addon/selection/active-line.js b/public/vendor/codemirror/addon/selection/active-line.js
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+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+// Because sometimes you need to style the cursor's line.
+//
+// Adds an option 'styleActiveLine' which, when enabled, gives the
+// active line's wrapping <div> the CSS class "CodeMirror-activeline",
+// and gives its background <div> the class "CodeMirror-activeline-background".
+
+(function(mod) {
+ if (typeof exports == "object" && typeof module == "object") // CommonJS
+ mod(require("../../lib/codemirror"));
+ else if (typeof define == "function" && define.amd) // AMD
+ define(["../../lib/codemirror"], mod);
+ else // Plain browser env
+ mod(CodeMirror);
+})(function(CodeMirror) {
+ "use strict";
+ var WRAP_CLASS = "CodeMirror-activeline";
+ var BACK_CLASS = "CodeMirror-activeline-background";
+
+ CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) {
+ var prev = old && old != CodeMirror.Init;
+ if (val && !prev) {
+ cm.state.activeLines = [];
+ updateActiveLines(cm, cm.listSelections());
+ cm.on("beforeSelectionChange", selectionChange);
+ } else if (!val && prev) {
+ cm.off("beforeSelectionChange", selectionChange);
+ clearActiveLines(cm);
+ delete cm.state.activeLines;
+ }
+ });
+
+ function clearActiveLines(cm) {
+ for (var i = 0; i < cm.state.activeLines.length; i++) {
+ cm.removeLineClass(cm.state.activeLines[i], "wrap", WRAP_CLASS);
+ cm.removeLineClass(cm.state.activeLines[i], "background", BACK_CLASS);
+ }
+ }
+
+ function sameArray(a, b) {
+ if (a.length != b.length) return false;
+ for (var i = 0; i < a.length; i++)
+ if (a[i] != b[i]) return false;
+ return true;
+ }
+
+ function updateActiveLines(cm, ranges) {
+ var active = [];
+ for (var i = 0; i < ranges.length; i++) {
+ var range = ranges[i];
+ if (!range.empty()) continue;
+ var line = cm.getLineHandleVisualStart(range.head.line);
+ if (active[active.length - 1] != line) active.push(line);
+ }
+ if (sameArray(cm.state.activeLines, active)) return;
+ cm.operation(function() {
+ clearActiveLines(cm);
+ for (var i = 0; i < active.length; i++) {
+ cm.addLineClass(active[i], "wrap", WRAP_CLASS);
+ cm.addLineClass(active[i], "background", BACK_CLASS);
+ }
+ cm.state.activeLines = active;
+ });
+ }
+
+ function selectionChange(cm, sel) {
+ updateActiveLines(cm, sel.ranges);
+ }
+});