| 1 |
// CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 |
// Distributed under an MIT license: http://codemirror.net/LICENSE |
| 3 |
|
| 4 |
(function(mod) { |
| 5 |
if (typeof exports == "object" && typeof module == "object") // CommonJS |
| 6 |
mod(require("../../lib/codemirror")); |
| 7 |
else if (typeof define == "function" && define.amd) // AMD |
| 8 |
define(["../../lib/codemirror"], mod); |
| 9 |
else // Plain browser env |
| 10 |
mod(CodeMirror); |
| 11 |
})(function(CodeMirror) { |
| 12 |
"use strict"; |
| 13 |
|
| 14 |
CodeMirror.defineOption("scrollPastEnd", false, function(cm, val, old) { |
| 15 |
if (old && old != CodeMirror.Init) { |
| 16 |
cm.off("change", onChange); |
| 17 |
cm.off("refresh", updateBottomMargin); |
| 18 |
cm.display.lineSpace.parentNode.style.paddingBottom = ""; |
| 19 |
cm.state.scrollPastEndPadding = null; |
| 20 |
} |
| 21 |
if (val) { |
| 22 |
cm.on("change", onChange); |
| 23 |
cm.on("refresh", updateBottomMargin); |
| 24 |
updateBottomMargin(cm); |
| 25 |
} |
| 26 |
}); |
| 27 |
|
| 28 |
function onChange(cm, change) { |
| 29 |
if (CodeMirror.changeEnd(change).line == cm.lastLine()) |
| 30 |
updateBottomMargin(cm); |
| 31 |
} |
| 32 |
|
| 33 |
function updateBottomMargin(cm) { |
| 34 |
var padding = ""; |
| 35 |
if (cm.lineCount() > 1) { |
| 36 |
var totalH = cm.display.scroller.clientHeight - 30, |
| 37 |
lastLineH = cm.getLineHandle(cm.lastLine()).height; |
| 38 |
padding = (totalH - lastLineH) + "px"; |
| 39 |
} |
| 40 |
if (cm.state.scrollPastEndPadding != padding) { |
| 41 |
cm.state.scrollPastEndPadding = padding; |
| 42 |
cm.display.lineSpace.parentNode.style.paddingBottom = padding; |
| 43 |
cm.off("refresh", updateBottomMargin); |
| 44 |
cm.setSize(); |
| 45 |
cm.on("refresh", updateBottomMargin); |
| 46 |
} |
| 47 |
} |
| 48 |
}); |
| 49 |
|
