// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://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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CodeMirror.defineExtension("addPanel", function(node, options) {
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if (!this.state.panels) initPanels(this);
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var info = this.state.panels;
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if (options && options.position == "bottom")
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info.wrapper.appendChild(node);
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else
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info.wrapper.insertBefore(node, info.wrapper.firstChild);
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var height = (options && options.height) || node.offsetHeight;
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this._setSize(null, info.heightLeft -= height);
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info.panels++;
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return new Panel(this, node, options, height);
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});
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function Panel(cm, node, options, height) {
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this.cm = cm;
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this.node = node;
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this.options = options;
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this.height = height;
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this.cleared = false;
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}
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Panel.prototype.clear = function() {
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if (this.cleared) return;
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this.cleared = true;
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var info = this.cm.state.panels;
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this.cm._setSize(null, info.heightLeft += this.height);
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info.wrapper.removeChild(this.node);
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if (--info.panels == 0) removePanels(this.cm);
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};
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Panel.prototype.changed = function(height) {
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var newHeight = height == null ? this.node.offsetHeight : height;
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var info = this.cm.state.panels;
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this.cm._setSize(null, info.height += (newHeight - this.height));
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this.height = newHeight;
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};
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function initPanels(cm) {
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var wrap = cm.getWrapperElement();
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var style = window.getComputedStyle ? window.getComputedStyle(wrap) : wrap.currentStyle;
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var height = parseInt(style.height);
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var info = cm.state.panels = {
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setHeight: wrap.style.height,
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heightLeft: height,
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panels: 0,
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wrapper: document.createElement("div")
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};
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wrap.parentNode.insertBefore(info.wrapper, wrap);
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var hasFocus = cm.hasFocus();
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info.wrapper.appendChild(wrap);
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if (hasFocus) cm.focus();
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cm._setSize = cm.setSize;
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if (height != null) cm.setSize = function(width, newHeight) {
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if (newHeight == null) return this._setSize(width, newHeight);
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info.setHeight = newHeight;
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if (typeof newHeight != "number") {
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var px = /^(\d+\.?\d*)px$/.exec(newHeight);
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if (px) {
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newHeight = Number(px[1]);
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} else {
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info.wrapper.style.height = newHeight;
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newHeight = info.wrapper.offsetHeight;
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info.wrapper.style.height = "";
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}
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}
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cm._setSize(width, info.heightLeft += (newHeight - height));
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height = newHeight;
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};
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}
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function removePanels(cm) {
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var info = cm.state.panels;
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cm.state.panels = null;
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var wrap = cm.getWrapperElement();
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info.wrapper.parentNode.replaceChild(wrap, info.wrapper);
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wrap.style.height = info.setHeight;
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cm.setSize = cm._setSize;
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cm.setSize();
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}
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});
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