8553bf460e
This change introduces the gr-limited-text element, which, given a string of text and a numeric limit, will display the text up to that limit. If the length of the text exceeds that limit, an ellipsis is added to indicate the truncation and a tooltip is enabled to display the full string. Displaying the topic string is limited to a reasonable number of characters in this way in both the change metadata and the change list. Bug: Issue 7197 Change-Id: If826fc2f2657e8ed12275e65f25f2d40c3180838
70 lines
1.9 KiB
JavaScript
70 lines
1.9 KiB
JavaScript
// Copyright (C) 2017 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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(function() {
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'use strict';
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/*
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* The gr-limited-text element is for displaying text with a maximum length
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* (in number of characters) to display. If the length of the text exceeds the
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* configured limit, then an ellipsis indicates that the text was truncated
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* and a tooltip containing the full text is enabled.
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*/
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Polymer({
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is: 'gr-limited-text',
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properties: {
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/** The un-truncated text to display. */
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text: String,
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/** The maximum length for the text to display before truncating. */
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limit: Number,
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/** Boolean property used by Gerrit.TooltipBehavior. */
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hasTooltip: {
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type: Boolean,
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value: false,
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},
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},
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observers: [
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'_updateTitle(text, limit)',
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],
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behaviors: [
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Gerrit.TooltipBehavior,
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],
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/**
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* The text or limit have changed. Recompute whether a tooltip needs to be
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* enabled.
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*/
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_updateTitle(text, limit) {
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this.hasTooltip = text.length > limit;
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if (this.hasTooltip) {
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this.setAttribute('title', text);
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} else {
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this.removeAttribute('title');
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}
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},
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_computeDisplayText(text, limit) {
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if (text.length > limit) {
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return text.substr(0, limit - 1) + '…';
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}
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return text;
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},
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});
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})();
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