274 lines
8.5 KiB
JavaScript
274 lines
8.5 KiB
JavaScript
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ace.define("ace/ext/elastic_tabstops_lite",["require","exports","module","ace/editor","ace/config"], function(require, exports, module) {
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"use strict";
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var ElasticTabstopsLite = function(editor) {
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this.$editor = editor;
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var self = this;
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var changedRows = [];
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var recordChanges = false;
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this.onAfterExec = function() {
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recordChanges = false;
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self.processRows(changedRows);
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changedRows = [];
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};
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this.onExec = function() {
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recordChanges = true;
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};
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this.onChange = function(delta) {
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if (recordChanges) {
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if (changedRows.indexOf(delta.start.row) == -1)
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changedRows.push(delta.start.row);
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if (delta.end.row != delta.start.row)
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changedRows.push(delta.end.row);
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}
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};
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};
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(function() {
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this.processRows = function(rows) {
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this.$inChange = true;
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var checkedRows = [];
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for (var r = 0, rowCount = rows.length; r < rowCount; r++) {
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var row = rows[r];
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if (checkedRows.indexOf(row) > -1)
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continue;
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var cellWidthObj = this.$findCellWidthsForBlock(row);
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var cellWidths = this.$setBlockCellWidthsToMax(cellWidthObj.cellWidths);
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var rowIndex = cellWidthObj.firstRow;
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for (var w = 0, l = cellWidths.length; w < l; w++) {
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var widths = cellWidths[w];
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checkedRows.push(rowIndex);
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this.$adjustRow(rowIndex, widths);
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rowIndex++;
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}
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}
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this.$inChange = false;
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};
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this.$findCellWidthsForBlock = function(row) {
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var cellWidths = [], widths;
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var rowIter = row;
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while (rowIter >= 0) {
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widths = this.$cellWidthsForRow(rowIter);
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if (widths.length == 0)
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break;
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cellWidths.unshift(widths);
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rowIter--;
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}
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var firstRow = rowIter + 1;
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rowIter = row;
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var numRows = this.$editor.session.getLength();
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while (rowIter < numRows - 1) {
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rowIter++;
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widths = this.$cellWidthsForRow(rowIter);
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if (widths.length == 0)
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break;
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cellWidths.push(widths);
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}
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return { cellWidths: cellWidths, firstRow: firstRow };
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};
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this.$cellWidthsForRow = function(row) {
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var selectionColumns = this.$selectionColumnsForRow(row);
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var tabs = [-1].concat(this.$tabsForRow(row));
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var widths = tabs.map(function(el) { return 0; } ).slice(1);
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var line = this.$editor.session.getLine(row);
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for (var i = 0, len = tabs.length - 1; i < len; i++) {
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var leftEdge = tabs[i]+1;
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var rightEdge = tabs[i+1];
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var rightmostSelection = this.$rightmostSelectionInCell(selectionColumns, rightEdge);
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var cell = line.substring(leftEdge, rightEdge);
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widths[i] = Math.max(cell.replace(/\s+$/g,'').length, rightmostSelection - leftEdge);
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}
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return widths;
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};
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this.$selectionColumnsForRow = function(row) {
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var selections = [], cursor = this.$editor.getCursorPosition();
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if (this.$editor.session.getSelection().isEmpty()) {
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if (row == cursor.row)
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selections.push(cursor.column);
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}
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return selections;
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};
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this.$setBlockCellWidthsToMax = function(cellWidths) {
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var startingNewBlock = true, blockStartRow, blockEndRow, maxWidth;
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var columnInfo = this.$izip_longest(cellWidths);
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for (var c = 0, l = columnInfo.length; c < l; c++) {
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var column = columnInfo[c];
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if (!column.push) {
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console.error(column);
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continue;
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}
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column.push(NaN);
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for (var r = 0, s = column.length; r < s; r++) {
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var width = column[r];
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if (startingNewBlock) {
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blockStartRow = r;
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maxWidth = 0;
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startingNewBlock = false;
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}
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if (isNaN(width)) {
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blockEndRow = r;
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for (var j = blockStartRow; j < blockEndRow; j++) {
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cellWidths[j][c] = maxWidth;
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}
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startingNewBlock = true;
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}
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maxWidth = Math.max(maxWidth, width);
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}
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}
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return cellWidths;
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};
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this.$rightmostSelectionInCell = function(selectionColumns, cellRightEdge) {
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var rightmost = 0;
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if (selectionColumns.length) {
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var lengths = [];
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for (var s = 0, length = selectionColumns.length; s < length; s++) {
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if (selectionColumns[s] <= cellRightEdge)
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lengths.push(s);
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else
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lengths.push(0);
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}
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rightmost = Math.max.apply(Math, lengths);
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}
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return rightmost;
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};
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this.$tabsForRow = function(row) {
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var rowTabs = [], line = this.$editor.session.getLine(row),
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re = /\t/g, match;
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while ((match = re.exec(line)) != null) {
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rowTabs.push(match.index);
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}
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return rowTabs;
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};
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this.$adjustRow = function(row, widths) {
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var rowTabs = this.$tabsForRow(row);
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if (rowTabs.length == 0)
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return;
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var bias = 0, location = -1;
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var expandedSet = this.$izip(widths, rowTabs);
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for (var i = 0, l = expandedSet.length; i < l; i++) {
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var w = expandedSet[i][0], it = expandedSet[i][1];
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location += 1 + w;
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it += bias;
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var difference = location - it;
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if (difference == 0)
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continue;
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var partialLine = this.$editor.session.getLine(row).substr(0, it );
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var strippedPartialLine = partialLine.replace(/\s*$/g, "");
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var ispaces = partialLine.length - strippedPartialLine.length;
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if (difference > 0) {
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this.$editor.session.getDocument().insertInLine({row: row, column: it + 1}, Array(difference + 1).join(" ") + "\t");
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this.$editor.session.getDocument().removeInLine(row, it, it + 1);
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bias += difference;
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}
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if (difference < 0 && ispaces >= -difference) {
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this.$editor.session.getDocument().removeInLine(row, it + difference, it);
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bias += difference;
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}
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}
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};
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this.$izip_longest = function(iterables) {
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if (!iterables[0])
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return [];
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var longest = iterables[0].length;
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var iterablesLength = iterables.length;
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for (var i = 1; i < iterablesLength; i++) {
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var iLength = iterables[i].length;
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if (iLength > longest)
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longest = iLength;
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}
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var expandedSet = [];
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for (var l = 0; l < longest; l++) {
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var set = [];
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for (var i = 0; i < iterablesLength; i++) {
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if (iterables[i][l] === "")
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set.push(NaN);
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else
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set.push(iterables[i][l]);
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}
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expandedSet.push(set);
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}
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return expandedSet;
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};
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this.$izip = function(widths, tabs) {
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var size = widths.length >= tabs.length ? tabs.length : widths.length;
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var expandedSet = [];
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for (var i = 0; i < size; i++) {
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var set = [ widths[i], tabs[i] ];
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expandedSet.push(set);
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}
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return expandedSet;
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};
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}).call(ElasticTabstopsLite.prototype);
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exports.ElasticTabstopsLite = ElasticTabstopsLite;
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var Editor = require("../editor").Editor;
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require("../config").defineOptions(Editor.prototype, "editor", {
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useElasticTabstops: {
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set: function(val) {
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if (val) {
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if (!this.elasticTabstops)
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this.elasticTabstops = new ElasticTabstopsLite(this);
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this.commands.on("afterExec", this.elasticTabstops.onAfterExec);
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this.commands.on("exec", this.elasticTabstops.onExec);
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this.on("change", this.elasticTabstops.onChange);
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} else if (this.elasticTabstops) {
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this.commands.removeListener("afterExec", this.elasticTabstops.onAfterExec);
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this.commands.removeListener("exec", this.elasticTabstops.onExec);
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this.removeListener("change", this.elasticTabstops.onChange);
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}
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}
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}
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});
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});
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(function() {
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ace.require(["ace/ext/elastic_tabstops_lite"], function() {});
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})();
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