489 lines
14 KiB
JavaScript
489 lines
14 KiB
JavaScript
// Copyright (C) 2016 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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var COMMIT_MESSAGE_PATH = '/COMMIT_MSG';
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var DiffViewMode = {
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SIDE_BY_SIDE: 'SIDE_BY_SIDE',
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UNIFIED: 'UNIFIED_DIFF',
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};
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var DiffSides = {
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LEFT: 'left',
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RIGHT: 'right',
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};
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var HASH_PATTERN = /^b?\d+$/;
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Polymer({
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is: 'gr-diff-view',
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/**
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* Fired when the title of the page should change.
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*
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* @event title-change
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*/
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properties: {
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/**
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* URL params passed from the router.
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*/
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params: {
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type: Object,
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observer: '_paramsChanged',
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},
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keyEventTarget: {
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type: Object,
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value: function() { return document.body; },
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},
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changeViewState: {
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type: Object,
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notify: true,
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value: function() { return {}; },
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},
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_patchRange: Object,
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_change: Object,
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_changeNum: String,
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_diff: Object,
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_fileList: {
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type: Array,
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value: function() { return []; },
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},
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_path: {
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type: String,
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observer: '_pathChanged',
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},
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_loggedIn: {
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type: Boolean,
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value: false,
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},
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_loading: {
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type: Boolean,
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value: true,
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},
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_prefs: Object,
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_localPrefs: Object,
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_projectConfig: Object,
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_userPrefs: Object,
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_diffMode: {
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type: String,
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computed: '_getDiffViewMode(changeViewState.diffMode, _userPrefs)',
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},
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_isImageDiff: Boolean,
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_filesWeblinks: Object,
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},
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behaviors: [
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Gerrit.KeyboardShortcutBehavior,
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],
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observers: [
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'_getChangeDetail(_changeNum)',
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'_getProjectConfig(_change.project)',
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'_getFiles(_changeNum, _patchRange.*)',
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],
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attached: function() {
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this._getLoggedIn().then(function(loggedIn) {
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this._loggedIn = loggedIn;
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if (loggedIn) {
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this._setReviewed(true);
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}
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}.bind(this));
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if (this._path) {
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this.fire('title-change',
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{title: this._computeFileDisplayName(this._path)});
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}
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this.$.cursor.push('diffs', this.$.diff);
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},
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detached: function() {
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// Reset the diff mode to null so that it reverts to the user preference.
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this.changeViewState.diffMode = null;
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},
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_getLoggedIn: function() {
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return this.$.restAPI.getLoggedIn();
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},
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_getProjectConfig: function(project) {
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return this.$.restAPI.getProjectConfig(project).then(
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function(config) {
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this._projectConfig = config;
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}.bind(this));
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},
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_getChangeDetail: function(changeNum) {
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return this.$.restAPI.getDiffChangeDetail(changeNum).then(
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function(change) {
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this._change = change;
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}.bind(this));
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},
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_getFiles: function(changeNum, patchRangeRecord) {
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var patchRange = patchRangeRecord.base;
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return this.$.restAPI.getChangeFilePathsAsSpeciallySortedArray(
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changeNum, patchRange).then(function(files) {
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this._fileList = files;
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}.bind(this));
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},
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_getDiffPreferences: function() {
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return this.$.restAPI.getDiffPreferences();
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},
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_getPreferences: function() {
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return this.$.restAPI.getPreferences();
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},
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_handleReviewedChange: function(e) {
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this._setReviewed(Polymer.dom(e).rootTarget.checked);
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},
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_setReviewed: function(reviewed) {
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this.$.reviewed.checked = reviewed;
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this._saveReviewedState(reviewed).catch(function(err) {
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alert('Couldn’t change file review status. Check the console ' +
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'and contact the PolyGerrit team for assistance.');
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throw err;
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}.bind(this));
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},
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_saveReviewedState: function(reviewed) {
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return this.$.restAPI.saveFileReviewed(this._changeNum,
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this._patchRange.patchNum, this._path, reviewed);
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},
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_handleKey: function(e) {
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if (this.shouldSupressKeyboardShortcut(e)) { return; }
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switch (e.keyCode) {
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case 37: // left
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if (e.shiftKey) {
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e.preventDefault();
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this.$.cursor.moveLeft();
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}
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break;
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case 39: // right
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if (e.shiftKey) {
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e.preventDefault();
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this.$.cursor.moveRight();
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}
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break;
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case 40: // down
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case 74: // 'j'
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e.preventDefault();
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this.$.cursor.moveDown();
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break;
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case 38: // up
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case 75: // 'k'
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e.preventDefault();
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this.$.cursor.moveUp();
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break;
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case 67: // 'c'
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if (!this.$.diff.isRangeSelected()) {
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e.preventDefault();
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var line = this.$.cursor.getTargetLineElement();
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if (line) {
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this.$.diff.addDraftAtLine(line);
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}
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}
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break;
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case 219: // '['
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e.preventDefault();
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this._navToFile(this._fileList, -1);
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break;
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case 221: // ']'
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e.preventDefault();
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this._navToFile(this._fileList, 1);
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break;
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case 78: // 'n'
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e.preventDefault();
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if (e.shiftKey) {
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this.$.cursor.moveToNextCommentThread();
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} else {
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this.$.cursor.moveToNextChunk();
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}
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break;
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case 80: // 'p'
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e.preventDefault();
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if (e.shiftKey) {
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this.$.cursor.moveToPreviousCommentThread();
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} else {
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this.$.cursor.moveToPreviousChunk();
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}
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break;
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case 65: // 'a'
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if (e.shiftKey) { // Hide left diff.
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e.preventDefault();
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this.$.diff.toggleLeftDiff();
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break;
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}
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if (!this._loggedIn) { break; }
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this.set('changeViewState.showReplyDialog', true);
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/* falls through */ // required by JSHint
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case 85: // 'u'
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if (this._changeNum && this._patchRange.patchNum) {
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e.preventDefault();
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page.show(this._getChangePath(
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this._changeNum,
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this._patchRange,
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this._change && this._change.revisions));
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}
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break;
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case 188: // ','
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e.preventDefault();
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this.$.prefsOverlay.open();
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break;
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}
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},
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_navToFile: function(fileList, direction) {
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if (fileList.length == 0) { return; }
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var idx = fileList.indexOf(this._path) + direction;
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if (idx < 0 || idx > fileList.length - 1) {
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page.show(this._getChangePath(
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this._changeNum,
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this._patchRange,
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this._change && this._change.revisions));
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return;
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}
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page.show(this._getDiffURL(this._changeNum,
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this._patchRange,
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fileList[idx]));
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},
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_paramsChanged: function(value) {
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if (value.view != this.tagName.toLowerCase()) { return; }
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this._loadHash(location.hash);
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this._changeNum = value.changeNum;
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this._patchRange = {
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patchNum: value.patchNum,
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basePatchNum: value.basePatchNum || 'PARENT',
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};
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this._path = value.path;
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this.fire('title-change',
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{title: this._computeFileDisplayName(this._path)});
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// When navigating away from the page, there is a possibility that the
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// patch number is no longer a part of the URL (say when navigating to
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// the top-level change info view) and therefore undefined in `params`.
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if (!this._patchRange.patchNum) {
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return;
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}
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var promises = [];
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this._localPrefs = this.$.storage.getPreferences();
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promises.push(this._getDiffPreferences().then(function(prefs) {
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this._prefs = prefs;
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}.bind(this)));
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promises.push(this._getPreferences().then(function(prefs) {
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this._userPrefs = prefs;
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}.bind(this)));
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promises.push(this._getChangeDetail(this._changeNum));
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Promise.all(promises)
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.then(function() { return this.$.diff.reload(); }.bind(this))
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.then(function() { this._loading = false; }.bind(this));
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},
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/**
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* If the URL hash is a diff address then configure the diff cursor.
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*/
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_loadHash: function(hash) {
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var hash = hash.replace(/^#/, '');
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if (!HASH_PATTERN.test(hash)) { return; }
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if (hash[0] === 'b') {
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this.$.cursor.side = DiffSides.LEFT;
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hash = hash.substring(1);
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} else {
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this.$.cursor.side = DiffSides.RIGHT;
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}
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this.$.cursor.initialLineNumber = parseInt(hash, 10);
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},
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_pathChanged: function(path) {
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if (this._fileList.length == 0) { return; }
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this.set('changeViewState.selectedFileIndex',
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this._fileList.indexOf(path));
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if (this._loggedIn) {
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this._setReviewed(true);
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}
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},
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_getDiffURL: function(changeNum, patchRange, path) {
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return '/c/' + changeNum + '/' + this._patchRangeStr(patchRange) + '/' +
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path;
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},
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_computeDiffURL: function(changeNum, patchRangeRecord, path) {
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return this._getDiffURL(changeNum, patchRangeRecord.base, path);
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},
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_patchRangeStr: function(patchRange) {
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var patchStr = patchRange.patchNum;
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if (patchRange.basePatchNum != null &&
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patchRange.basePatchNum != 'PARENT') {
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patchStr = patchRange.basePatchNum + '..' + patchRange.patchNum;
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}
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return patchStr;
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},
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_computeAvailablePatches: function(revisions) {
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var patchNums = [];
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for (var rev in revisions) {
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patchNums.push(revisions[rev]._number);
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}
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return patchNums.sort(function(a, b) { return a - b; });
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},
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_getChangePath: function(changeNum, patchRange, revisions) {
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var base = '/c/' + changeNum + '/';
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// The change may not have loaded yet, making revisions unavailable.
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if (!revisions) {
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return base + this._patchRangeStr(patchRange);
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}
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var latestPatchNum = -1;
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for (var rev in revisions) {
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latestPatchNum = Math.max(latestPatchNum, revisions[rev]._number);
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}
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if (patchRange.basePatchNum !== 'PARENT' ||
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parseInt(patchRange.patchNum, 10) !== latestPatchNum) {
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return base + this._patchRangeStr(patchRange);
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}
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return base;
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},
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_computeChangePath: function(changeNum, patchRangeRecord, revisions) {
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return this._getChangePath(changeNum, patchRangeRecord.base, revisions);
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},
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_computeFileDisplayName: function(path) {
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return path == COMMIT_MESSAGE_PATH ? 'Commit message' : path;
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},
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_computeFileSelected: function(path, currentPath) {
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return path == currentPath;
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},
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_computePrefsButtonHidden: function(prefs, loggedIn) {
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return !loggedIn || !prefs;
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},
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_computeKeyNav: function(path, selectedPath, fileList) {
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var selectedIndex = fileList.indexOf(selectedPath);
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if (fileList.indexOf(path) == selectedIndex - 1) {
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return '[';
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}
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if (fileList.indexOf(path) == selectedIndex + 1) {
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return ']';
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}
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return '';
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},
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_handleFileTap: function(e) {
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this.$.dropdown.close();
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},
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_handleMobileSelectChange: function(e) {
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var path = Polymer.dom(e).rootTarget.value;
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page.show(this._getDiffURL(this._changeNum, this._patchRange, path));
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},
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_showDropdownTapHandler: function(e) {
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this.$.dropdown.open();
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},
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_handlePrefsTap: function(e) {
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e.preventDefault();
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this.$.prefsOverlay.open();
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},
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_handlePrefsSave: function(e) {
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e.stopPropagation();
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var el = Polymer.dom(e).rootTarget;
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el.disabled = true;
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this.$.storage.savePreferences(this._localPrefs);
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this._saveDiffPreferences().then(function(response) {
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el.disabled = false;
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if (!response.ok) { return response; }
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this.$.prefsOverlay.close();
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}.bind(this)).catch(function(err) {
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el.disabled = false;
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}.bind(this));
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},
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_saveDiffPreferences: function() {
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return this.$.restAPI.saveDiffPreferences(this._prefs);
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},
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_handlePrefsCancel: function(e) {
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e.stopPropagation();
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this.$.prefsOverlay.close();
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},
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/**
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* _getDiffViewMode: Get the diff view (side-by-side or unified) based on
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* the current state.
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*
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* The expected behavior is to use the mode specified in the user's
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* preferences unless they have manually chosen the alternative view. If the
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* user navigates up to the change view, it should clear this choice and
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* revert to the preference the next time a diff is viewed.
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*
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* Use side-by-side if the user is not logged in.
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*
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* @return {String}
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*/
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_getDiffViewMode: function() {
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if (this.changeViewState.diffMode) {
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return this.changeViewState.diffMode;
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} else if (this._userPrefs && this._userPrefs.diff_view) {
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return this.changeViewState.diffMode = this._userPrefs.diff_view;
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}
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return DiffViewMode.SIDE_BY_SIDE;
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},
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_computeModeSelectHidden: function() {
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return this._isImageDiff;
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},
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_onLineSelected: function(e, detail) {
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this.$.cursor.moveToLineNumber(detail.number, detail.side);
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history.pushState(null, null, '#' + this.$.cursor.getAddress());
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},
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});
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})();
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