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48 lines
1.5 KiB
48 lines
1.5 KiB
// CodeMirror, copyright (c) by Marijn Haverbeke and others |
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// Distributed under an MIT license: https://codemirror.net/LICENSE |
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(function(mod) { |
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if (typeof exports == "object" && typeof module == "object") // CommonJS |
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mod(require("../../lib/codemirror")); |
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else if (typeof define == "function" && define.amd) // AMD |
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define(["../../lib/codemirror"], mod); |
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else // Plain browser env |
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mod(CodeMirror); |
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})(function(CodeMirror) { |
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"use strict"; |
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CodeMirror.defineOption("scrollPastEnd", false, function(cm, val, old) { |
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if (old && old != CodeMirror.Init) { |
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cm.off("change", onChange); |
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cm.off("refresh", updateBottomMargin); |
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cm.display.lineSpace.parentNode.style.paddingBottom = ""; |
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cm.state.scrollPastEndPadding = null; |
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} |
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if (val) { |
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cm.on("change", onChange); |
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cm.on("refresh", updateBottomMargin); |
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updateBottomMargin(cm); |
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} |
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}); |
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function onChange(cm, change) { |
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if (CodeMirror.changeEnd(change).line == cm.lastLine()) |
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updateBottomMargin(cm); |
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} |
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function updateBottomMargin(cm) { |
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var padding = ""; |
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if (cm.lineCount() > 1) { |
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var totalH = cm.display.scroller.clientHeight - 30, |
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lastLineH = cm.getLineHandle(cm.lastLine()).height; |
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padding = (totalH - lastLineH) + "px"; |
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} |
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if (cm.state.scrollPastEndPadding != padding) { |
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cm.state.scrollPastEndPadding = padding; |
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cm.display.lineSpace.parentNode.style.paddingBottom = padding; |
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cm.off("refresh", updateBottomMargin); |
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cm.setSize(); |
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cm.on("refresh", updateBottomMargin); |
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} |
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} |
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});
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