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Fix #49777 - Emmet balance In after balance out should go back to initial selection and not first child #49996

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Merged
ramya-rao-a merged 3 commits into from
May 30, 2018
Merged

Fix #49777 - Emmet balance In after balance out should go back to initial selection and not first child #49996

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71fa444
Merge pull request #1 from Microsoft/master
Heldenkrieger01 May 16, 2018
eba538e
Update Emmet - balance.ts
Heldenkrieger01 May 16, 2018
299b2ca
Cover all cases
ramya-rao-a May 30, 2018
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39 changes: 37 additions & 2 deletions extensions/emmet/src/balance.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,10 @@ import * as vscode from 'vscode';
import { HtmlNode } from 'EmmetNode';
import { getNode, parseDocument, validate } from './util';

let balanceOutStack: Array<vscode.Selection[]> = [];
let lastOut = false;
let lastBalancedSelections: vscode.Selection[] = [];

export function balanceOut() {
balance(true);
}
Expand All @@ -32,8 +36,28 @@ function balance(out: boolean) {
newSelections.push(range);
});

editor.selection = newSelections[0];
editor.selections = newSelections;
if (areSameSelections(newSelections, editor.selections)) {
return;
}

if (areSameSelections(lastBalancedSelections, editor.selections)) {
if (out) {
if (!balanceOutStack.length) {
balanceOutStack.push(editor.selections);
}
balanceOutStack.push(newSelections);
} else {
if (lastOut) {
balanceOutStack.pop();
}
newSelections = balanceOutStack.pop() || newSelections;
}
} else {
balanceOutStack = out ? [editor.selections, newSelections] : [];
}

lastOut = out;
lastBalancedSelections = editor.selections = newSelections;
}

function getRangeToBalanceOut(document: vscode.TextDocument, selection: vscode.Selection, rootNode: HtmlNode): vscode.Selection {
Expand Down Expand Up @@ -83,3 +107,14 @@ function getRangeToBalanceIn(document: vscode.TextDocument, selection: vscode.Se

}

function areSameSelections(a: vscode.Selection[], b: vscode.Selection[]): boolean {
if (a.length !== b.length) {
return false;
}
for (let i = 0; i < a.length; i++) {
if (!a[i].isEqual(b[i])) {
return false;
}
}
return true;
}
29 changes: 29 additions & 0 deletions extensions/emmet/src/test/editPointSelectItemBalance.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -211,6 +211,35 @@ suite('Tests for Next/Previous Select/Edit point and Balance actions', () => {
});
});

test('Emmet Balance In using the same stack as Balance out in html file', function (): any {
return withRandomFileEditor(htmlContents, 'html', (editor, doc) => {

editor.selections = [new Selection(15, 6, 15, 10)];
let expectedBalanceOutRanges: [number, number, number, number][] = [
[15, 3, 15, 32], // <li class="item1">Item 2</li>
[13, 23, 16, 2], // inner contents of <ul class="nav main">
[13, 2, 16, 7], // outer contents of <ul class="nav main">
[12, 21, 17, 1], // inner contents of <div class="header">
[12, 1, 17, 7], // outer contents of <div class="header">
[8, 6, 18, 0], // inner contents of <body>
[8, 0, 18, 7], // outer contents of <body>
[2, 16, 19, 0], // inner contents of <html>
[2, 0, 19, 7], // outer contents of <html>
];
expectedBalanceOutRanges.forEach(([linestart, colstart, lineend, colend]) => {
balanceOut();
testSelection(editor.selection, colstart, linestart, colend, lineend);
});

expectedBalanceOutRanges.reverse().forEach(([linestart, colstart, lineend, colend]) => {
testSelection(editor.selection, colstart, linestart, colend, lineend);
balanceIn();
});

return Promise.resolve();
});
});

});

function testSelection(selection: Selection, startChar: number, startline: number, endChar?: number, endLine?: number) {
Expand Down