mirror of
https://github.com/overleaf/overleaf.git
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293 lines
9.6 KiB
JavaScript
Executable file
293 lines
9.6 KiB
JavaScript
Executable file
/* ***** BEGIN LICENSE BLOCK *****
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* Distributed under the BSD license:
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*
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* Copyright (c) 2010, Ajax.org B.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Ajax.org B.V. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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"use strict";
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var oop = require("./lib/oop");
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var dom = require("./lib/dom");
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var Range = require("./range").Range;
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function LineWidgets(session) {
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this.session = session;
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this.session.widgetManager = this;
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this.session.getRowLength = this.getRowLength;
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this.session.$getWidgetScreenLength = this.$getWidgetScreenLength;
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this.updateOnChange = this.updateOnChange.bind(this);
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this.renderWidgets = this.renderWidgets.bind(this);
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this.measureWidgets = this.measureWidgets.bind(this);
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this.session._changedWidgets = [];
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this.detach = this.detach.bind(this);
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this.session.on("change", this.updateOnChange);
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};
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(function() {
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this.getRowLength = function(row) {
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if (this.lineWidgets)
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var h = this.lineWidgets[row] && this.lineWidgets[row].rowCount || 0;
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else
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h = 0;
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if (!this.$useWrapMode || !this.$wrapData[row]) {
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return 1 + h;
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} else {
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return this.$wrapData[row].length + 1 + h;
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}
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};
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this.$getWidgetScreenLength = function() {
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var screenRows = 0;
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this.lineWidgets.forEach(function(w){
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if (w && w.rowCount)
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screenRows +=w.rowCount;
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});
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return screenRows;
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};
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this.attach = function(editor) {
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if (editor.widgetManager && editor.widgetManager != this)
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editor.widgetManager.detach();
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if (this.editor == editor)
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return;
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this.detach();
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this.editor = editor;
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this.editor.on("changeSession", this.detach);
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editor.widgetManager = this;
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editor.setOption("enableLineWidgets", true);
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editor.renderer.on("beforeRender", this.measureWidgets);
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editor.renderer.on("afterRender", this.renderWidgets);
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};
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this.detach = function(e) {
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if (e && e.session == this.session)
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return; // sometimes attach can be called before setSession
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var editor = this.editor;
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if (!editor)
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return;
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editor.off("changeSession", this.detach);
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this.editor = null;
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editor.widgetManager = null;
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editor.renderer.off("beforeRender", this.measureWidgets);
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editor.renderer.off("afterRender", this.renderWidgets);
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this.session.lineWidgets.forEach(function(w) {
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if (w && w.el && w.el.parentNode) {
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w._inDocument = false;
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w.el.parentNode.removeChild(w.el);
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}
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});
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};
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this.updateOnChange = function(e) {
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var cells = this.session.lineWidgets;
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if (!cells) return;
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var delta = e.data;
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var range = delta.range;
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var startRow = range.start.row;
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var len = range.end.row - startRow;
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if (len === 0) {
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// return
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} else if (delta.action == "removeText" || delta.action == "removeLines") {
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var removed = cells.splice(startRow + 1, len);
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removed.forEach(function(w) {
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w && this.removeLineWidget(w);
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}, this);
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this.$updateRows();
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} else {
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var args = Array(len);
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args.unshift(startRow, 0);
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cells.splice.apply(cells, args);
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this.$updateRows();
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}
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};
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this.$updateRows = function() {
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var lw = this.session.lineWidgets;
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if (!lw) return;
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var noWidgets = true;
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lw.forEach(function(w, i) {
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if (w) {
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noWidgets = false;
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w.row = i;
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}
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});
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if (noWidgets)
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this.session.lineWidgets = null;
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}
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this.addLineWidget = function(w) {
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if (!this.session.lineWidgets)
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this.session.lineWidgets = Array(this.session.getLength())
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this.session.lineWidgets[w.row] = w;
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var renderer = this.editor.renderer;
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if (w.html && !w.el) {
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w.el = dom.createElement("div");
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w.el.innerHTML = w.html;
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}
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if (w.el) {
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dom.addCssClass(w.el, "ace_lineWidgetContainer");
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renderer.container.appendChild(w.el);
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w._inDocument = true;
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}
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if (!w.coverGutter) {
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w.el.style.zIndex = 3;
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}
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if (!w.pixelHeight) {
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w.pixelHeight = w.el.offsetHeight;
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}
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if (w.rowCount == null)
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w.rowCount = w.pixelHeight / renderer.layerConfig.lineHeight;
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this.session._emit("changeFold", {data:{start:{row: w.row}}});
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this.$updateRows();
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this.renderWidgets(null, renderer);
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return w;
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};
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this.removeLineWidget = function(w) {
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w._inDocument = false;
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if (w.el && w.el.parentNode)
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w.el.parentNode.removeChild(w.el);
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if (w.editor && w.editor.destroy) try {
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w.editor.destroy();
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} catch(e){}
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this.session.lineWidgets[w.row] = undefined;
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this.session._emit("changeFold", {data:{start:{row: w.row}}});
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this.$updateRows();
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};
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this.onWidgetChanged = function(w) {
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this.session._changedWidgets.push(w);
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this.editor && this.editor.renderer.updateFull();
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};
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this.measureWidgets = function(e, renderer) {
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var ws = this.session._changedWidgets;
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var config = renderer.layerConfig;
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if (!ws || !ws.length) return;
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var min = Infinity;
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for (var i = 0; i < ws.length; i++) {
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var w = ws[i].lineWidget;
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if (!w._inDocument) {
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w._inDocument = true;
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renderer.container.appendChild(w.el);
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}
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w.h = w.el.offsetHeight;
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if (!w.fixedWidth) {
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w.w = w.el.offsetWidth;
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w.screenWidth = Math.ceil(w.w / config.characterWidth);
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}
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var rowCount = w.h / config.lineHeight;
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if (w.coverLine) {
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rowCount -= this.session.getRowLineCount(w.row);
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if (rowCount < 0)
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rowCount = 0;
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}
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if (w.rowCount != rowCount) {
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w.rowCount = rowCount;
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if (w.row < min)
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min = w.row;
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}
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}
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if (min != Infinity) {
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this.session._emit("changeFold", {data:{start:{row: min}}});
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this.session.lineWidgetWidth = null;
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}
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this.session._changedWidgets = [];
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};
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this.renderWidgets = function(e, renderer) {
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var config = renderer.layerConfig;
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var ws = this.session.lineWidgets;
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if (!ws)
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return;
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var first = Math.min(this.firstRow, config.firstRow);
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var last = Math.max(this.lastRow, config.lastRow, ws.length);
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while (first > 0 && !ws[first])
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first--;
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this.firstRow = config.firstRow;
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this.lastRow = config.lastRow;
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renderer.$cursorLayer.config = config;
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for (var i = first; i <= last; i++) {
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var w = ws[i];
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if (!w || !w.el) continue;
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if (!w._inDocument) {
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w._inDocument = true;
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renderer.container.appendChild(w.el);
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}
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var top = renderer.$cursorLayer.getPixelPosition({row: i, column:0}, true).top;
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if (!w.coverLine)
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top += config.lineHeight * this.session.getRowLineCount(w.row);
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w.el.style.top = top - config.offset + "px";
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var left = w.coverGutter ? 0 : renderer.gutterWidth;
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if (!w.fixedWidth)
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left -= renderer.scrollLeft;
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w.el.style.left = left + "px";
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if (w.fixedWidth) {
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w.el.style.right = renderer.scrollBar.getWidth() + "px";
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} else {
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w.el.style.right = "";
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}
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}
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};
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}).call(LineWidgets.prototype);
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exports.LineWidgets = LineWidgets;
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});
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