matrix-react-sdk/lib/editor/history.js

SDK for matrix.org using React

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.MAX_STEP_LENGTH = void 0;

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

/*
Copyright 2019 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
const MAX_STEP_LENGTH = 10;
exports.MAX_STEP_LENGTH = MAX_STEP_LENGTH;

class HistoryManager {
  constructor() {
    (0, _defineProperty2.default)(this, "stack", []);
    (0, _defineProperty2.default)(this, "newlyTypedCharCount", 0);
    (0, _defineProperty2.default)(this, "currentIndex", -1);
    (0, _defineProperty2.default)(this, "changedSinceLastPush", false);
    (0, _defineProperty2.default)(this, "lastCaret", null);
    (0, _defineProperty2.default)(this, "nonWordBoundarySinceLastPush", false);
    (0, _defineProperty2.default)(this, "addedSinceLastPush", false);
    (0, _defineProperty2.default)(this, "removedSinceLastPush", false);
  }

  clear() {
    this.stack = [];
    this.newlyTypedCharCount = 0;
    this.currentIndex = -1;
    this.changedSinceLastPush = false;
    this.lastCaret = null;
    this.nonWordBoundarySinceLastPush = false;
    this.addedSinceLastPush = false;
    this.removedSinceLastPush = false;
  }

  shouldPush(inputType, diff) {
    // right now we can only push a step after
    // the input has been applied to the model,
    // so we can't push the state before something happened.
    // not ideal but changing this would be harder to fit cleanly into
    // the editor model.
    const isNonBulkInput = inputType === "insertText" || inputType === "deleteContentForward" || inputType === "deleteContentBackward";

    if (diff && isNonBulkInput) {
      if (diff.added) {
        this.addedSinceLastPush = true;
      }

      if (diff.removed) {
        this.removedSinceLastPush = true;
      } // as long as you've only been adding or removing since the last push


      if (this.addedSinceLastPush !== this.removedSinceLastPush) {
        // add steps by word boundary, up to MAX_STEP_LENGTH characters
        const str = diff.added ? diff.added : diff.removed;
        const isWordBoundary = str === " " || str === "\t" || str === "\n";

        if (this.nonWordBoundarySinceLastPush && isWordBoundary) {
          return true;
        }

        if (!isWordBoundary) {
          this.nonWordBoundarySinceLastPush = true;
        }

        this.newlyTypedCharCount += str.length;
        return this.newlyTypedCharCount > MAX_STEP_LENGTH;
      } else {
        // if starting to remove while adding before, or the opposite, push
        return true;
      }
    } else {
      // bulk input (paste, ...) should be pushed every time
      return true;
    }
  }

  pushState(model
  /*: EditorModel*/
  , caret
  /*: Caret*/
  ) {
    // remove all steps after current step
    while (this.currentIndex < this.stack.length - 1) {
      this.stack.pop();
    }

    const parts = model.serializeParts();
    this.stack.push({
      parts,
      caret
    });
    this.currentIndex = this.stack.length - 1;
    this.lastCaret = null;
    this.changedSinceLastPush = false;
    this.newlyTypedCharCount = 0;
    this.nonWordBoundarySinceLastPush = false;
    this.addedSinceLastPush = false;
    this.removedSinceLastPush = false;
  } // needs to persist parts and caret position


  tryPush(model
  /*: EditorModel*/
  , caret
  /*: Caret*/
  , inputType
  /*: string*/
  , diff
  /*: IDiff*/
  ) {
    // ignore state restoration echos.
    // these respect the inputType values of the input event,
    // but are actually passed in from MessageEditor calling model.reset()
    // in the keydown event handler.
    if (inputType === "historyUndo" || inputType === "historyRedo") {
      return false;
    }

    const shouldPush = this.shouldPush(inputType, diff);

    if (shouldPush) {
      this.pushState(model, caret);
    } else {
      this.lastCaret = caret;
      this.changedSinceLastPush = true;
    }

    return shouldPush;
  }

  ensureLastChangesPushed(model
  /*: EditorModel*/
  ) {
    if (this.changedSinceLastPush) {
      this.pushState(model, this.lastCaret);
    }
  }

  canUndo() {
    return this.currentIndex >= 1 || this.changedSinceLastPush;
  }

  canRedo() {
    return this.currentIndex < this.stack.length - 1;
  } // returns state that should be applied to model


  undo(model
  /*: EditorModel*/
  ) {
    if (this.canUndo()) {
      this.ensureLastChangesPushed(model);
      this.currentIndex -= 1;
      return this.stack[this.currentIndex];
    }
  } // returns state that should be applied to model


  redo() {
    if (this.canRedo()) {
      this.changedSinceLastPush = false;
      this.currentIndex += 1;
      return this.stack[this.currentIndex];
    }
  }

}

exports.default = HistoryManager;
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"sources":["../../src/editor/history.ts"],"names":["MAX_STEP_LENGTH","HistoryManager","clear","stack","newlyTypedCharCount","currentIndex","changedSinceLastPush","lastCaret","nonWordBoundarySinceLastPush","addedSinceLastPush","removedSinceLastPush","shouldPush","inputType","diff","isNonBulkInput","added","removed","str","isWordBoundary","length","pushState","model","caret","pop","parts","serializeParts","push","tryPush","ensureLastChangesPushed","canUndo","canRedo","undo","redo"],"mappings":";;;;;;;;;;;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAYO,MAAMA,eAAe,GAAG,EAAxB;;;AAEQ,MAAMC,cAAN,CAAqB;AAAA;AAAA,iDACJ,EADI;AAAA,+DAEF,CAFE;AAAA,wDAGT,CAAC,CAHQ;AAAA,gEAID,KAJC;AAAA,qDAKL,IALK;AAAA,wEAMO,KANP;AAAA,8DAOH,KAPG;AAAA,gEAQD,KARC;AAAA;;AAUhCC,EAAAA,KAAK,GAAG;AACJ,SAAKC,KAAL,GAAa,EAAb;AACA,SAAKC,mBAAL,GAA2B,CAA3B;AACA,SAAKC,YAAL,GAAoB,CAAC,CAArB;AACA,SAAKC,oBAAL,GAA4B,KAA5B;AACA,SAAKC,SAAL,GAAiB,IAAjB;AACA,SAAKC,4BAAL,GAAoC,KAApC;AACA,SAAKC,kBAAL,GAA0B,KAA1B;AACA,SAAKC,oBAAL,GAA4B,KAA5B;AACH;;AAEOC,EAAAA,UAAR,CAAmBC,SAAnB,EAA8BC,IAA9B,EAAoC;AAChC;AACA;AACA;AACA;AACA;AACA,UAAMC,cAAc,GAAGF,SAAS,KAAK,YAAd,IACAA,SAAS,KAAK,sBADd,IAEAA,SAAS,KAAK,uBAFrC;;AAGA,QAAIC,IAAI,IAAIC,cAAZ,EAA4B;AACxB,UAAID,IAAI,CAACE,KAAT,EAAgB;AACZ,aAAKN,kBAAL,GAA0B,IAA1B;AACH;;AACD,UAAII,IAAI,CAACG,OAAT,EAAkB;AACd,aAAKN,oBAAL,GAA4B,IAA5B;AACH,OANuB,CAOxB;;;AACA,UAAI,KAAKD,kBAAL,KAA4B,KAAKC,oBAArC,EAA2D;AACvD;AACA,cAAMO,GAAG,GAAGJ,IAAI,CAACE,KAAL,GAAaF,IAAI,CAACE,KAAlB,GAA0BF,IAAI,CAACG,OAA3C;AACA,cAAME,cAAc,GAAGD,GAAG,KAAK,GAAR,IAAeA,GAAG,KAAK,IAAvB,IAA+BA,GAAG,KAAK,IAA9D;;AACA,YAAI,KAAKT,4BAAL,IAAqCU,cAAzC,EAAyD;AACrD,iBAAO,IAAP;AACH;;AACD,YAAI,CAACA,cAAL,EAAqB;AACjB,eAAKV,4BAAL,GAAoC,IAApC;AACH;;AACD,aAAKJ,mBAAL,IAA4Ba,GAAG,CAACE,MAAhC;AACA,eAAO,KAAKf,mBAAL,GAA2BJ,eAAlC;AACH,OAZD,MAYO;AACH;AACA,eAAO,IAAP;AACH;AACJ,KAxBD,MAwBO;AACH;AACA,aAAO,IAAP;AACH;AACJ;;AAEOoB,EAAAA,SAAR,CAAkBC;AAAlB;AAAA,IAAsCC;AAAtC;AAAA,IAAoD;AAChD;AACA,WAAO,KAAKjB,YAAL,GAAqB,KAAKF,KAAL,CAAWgB,MAAX,GAAoB,CAAhD,EAAoD;AAChD,WAAKhB,KAAL,CAAWoB,GAAX;AACH;;AACD,UAAMC,KAAK,GAAGH,KAAK,CAACI,cAAN,EAAd;AACA,SAAKtB,KAAL,CAAWuB,IAAX,CAAgB;AAACF,MAAAA,KAAD;AAAQF,MAAAA;AAAR,KAAhB;AACA,SAAKjB,YAAL,GAAoB,KAAKF,KAAL,CAAWgB,MAAX,GAAoB,CAAxC;AACA,SAAKZ,SAAL,GAAiB,IAAjB;AACA,SAAKD,oBAAL,GAA4B,KAA5B;AACA,SAAKF,mBAAL,GAA2B,CAA3B;AACA,SAAKI,4BAAL,GAAoC,KAApC;AACA,SAAKC,kBAAL,GAA0B,KAA1B;AACA,SAAKC,oBAAL,GAA4B,KAA5B;AACH,GA1E+B,CA4EhC;;;AACAiB,EAAAA,OAAO,CAACN;AAAD;AAAA,IAAqBC;AAArB;AAAA,IAAmCV;AAAnC;AAAA,IAAsDC;AAAtD;AAAA,IAAmE;AACtE;AACA;AACA;AACA;AACA,QAAID,SAAS,KAAK,aAAd,IAA+BA,SAAS,KAAK,aAAjD,EAAgE;AAC5D,aAAO,KAAP;AACH;;AACD,UAAMD,UAAU,GAAG,KAAKA,UAAL,CAAgBC,SAAhB,EAA2BC,IAA3B,CAAnB;;AACA,QAAIF,UAAJ,EAAgB;AACZ,WAAKS,SAAL,CAAeC,KAAf,EAAsBC,KAAtB;AACH,KAFD,MAEO;AACH,WAAKf,SAAL,GAAiBe,KAAjB;AACA,WAAKhB,oBAAL,GAA4B,IAA5B;AACH;;AACD,WAAOK,UAAP;AACH;;AAEDiB,EAAAA,uBAAuB,CAACP;AAAD;AAAA,IAAqB;AACxC,QAAI,KAAKf,oBAAT,EAA+B;AAC3B,WAAKc,SAAL,CAAeC,KAAf,EAAsB,KAAKd,SAA3B;AACH;AACJ;;AAEDsB,EAAAA,OAAO,GAAG;AACN,WAAO,KAAKxB,YAAL,IAAqB,CAArB,IAA0B,KAAKC,oBAAtC;AACH;;AAEDwB,EAAAA,OAAO,GAAG;AACN,WAAO,KAAKzB,YAAL,GAAqB,KAAKF,KAAL,CAAWgB,MAAX,GAAoB,CAAhD;AACH,GA3G+B,CA6GhC;;;AACAY,EAAAA,IAAI,CAACV;AAAD;AAAA,IAAqB;AACrB,QAAI,KAAKQ,OAAL,EAAJ,EAAoB;AAChB,WAAKD,uBAAL,CAA6BP,KAA7B;AACA,WAAKhB,YAAL,IAAqB,CAArB;AACA,aAAO,KAAKF,KAAL,CAAW,KAAKE,YAAhB,CAAP;AACH;AACJ,GApH+B,CAsHhC;;;AACA2B,EAAAA,IAAI,GAAG;AACH,QAAI,KAAKF,OAAL,EAAJ,EAAoB;AAChB,WAAKxB,oBAAL,GAA4B,KAA5B;AACA,WAAKD,YAAL,IAAqB,CAArB;AACA,aAAO,KAAKF,KAAL,CAAW,KAAKE,YAAhB,CAAP;AACH;AACJ;;AA7H+B","sourcesContent":["/*\nCopyright 2019 The Matrix.org Foundation C.I.C.\n\nLicensed under the Apache License, Version 2.0 (the \"License\");\nyou may not use this file except in compliance with the License.\nYou may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing, software\ndistributed under the License is distributed on an \"AS IS\" BASIS,\nWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\nSee the License for the specific language governing permissions and\nlimitations under the License.\n*/\n\nimport EditorModel from \"./model\";\nimport {IDiff} from \"./diff\";\nimport {SerializedPart} from \"./parts\";\nimport {Caret} from \"./caret\";\n\ninterface IHistory {\n    parts: SerializedPart[];\n    caret: Caret;\n}\n\nexport const MAX_STEP_LENGTH = 10;\n\nexport default class HistoryManager {\n    private stack: IHistory[] = [];\n    private newlyTypedCharCount = 0;\n    private currentIndex = -1;\n    private changedSinceLastPush = false;\n    private lastCaret: Caret = null;\n    private nonWordBoundarySinceLastPush = false;\n    private addedSinceLastPush = false;\n    private removedSinceLastPush = false;\n\n    clear() {\n        this.stack = [];\n        this.newlyTypedCharCount = 0;\n        this.currentIndex = -1;\n        this.changedSinceLastPush = false;\n        this.lastCaret = null;\n        this.nonWordBoundarySinceLastPush = false;\n        this.addedSinceLastPush = false;\n        this.removedSinceLastPush = false;\n    }\n\n    private shouldPush(inputType, diff) {\n        // right now we can only push a step after\n        // the input has been applied to the model,\n        // so we can't push the state before something happened.\n        // not ideal but changing this would be harder to fit cleanly into\n        // the editor model.\n        const isNonBulkInput = inputType === \"insertText\" ||\n                               inputType === \"deleteContentForward\" ||\n                               inputType === \"deleteContentBackward\";\n        if (diff && isNonBulkInput) {\n            if (diff.added) {\n                this.addedSinceLastPush = true;\n            }\n            if (diff.removed) {\n                this.removedSinceLastPush = true;\n            }\n            // as long as you've only been adding or removing since the last push\n            if (this.addedSinceLastPush !== this.removedSinceLastPush) {\n                // add steps by word boundary, up to MAX_STEP_LENGTH characters\n                const str = diff.added ? diff.added : diff.removed;\n                const isWordBoundary = str === \" \" || str === \"\\t\" || str === \"\\n\";\n                if (this.nonWordBoundarySinceLastPush && isWordBoundary) {\n                    return true;\n                }\n                if (!isWordBoundary) {\n                    this.nonWordBoundarySinceLastPush = true;\n                }\n                this.newlyTypedCharCount += str.length;\n                return this.newlyTypedCharCount > MAX_STEP_LENGTH;\n            } else {\n                // if starting to remove while adding before, or the opposite, push\n                return true;\n            }\n        } else {\n            // bulk input (paste, ...) should be pushed every time\n            return true;\n        }\n    }\n\n    private pushState(model: EditorModel, caret: Caret) {\n        // remove all steps after current step\n        while (this.currentIndex < (this.stack.length - 1)) {\n            this.stack.pop();\n        }\n        const parts = model.serializeParts();\n        this.stack.push({parts, caret});\n        this.currentIndex = this.stack.length - 1;\n        this.lastCaret = null;\n        this.changedSinceLastPush = false;\n        this.newlyTypedCharCount = 0;\n        this.nonWordBoundarySinceLastPush = false;\n        this.addedSinceLastPush = false;\n        this.removedSinceLastPush = false;\n    }\n\n    // needs to persist parts and caret position\n    tryPush(model: EditorModel, caret: Caret, inputType: string, diff: IDiff) {\n        // ignore state restoration echos.\n        // these respect the inputType values of the input event,\n        // but are actually passed in from MessageEditor calling model.reset()\n        // in the keydown event handler.\n        if (inputType === \"historyUndo\" || inputType === \"historyRedo\") {\n            return false;\n        }\n        const shouldPush = this.shouldPush(inputType, diff);\n        if (shouldPush) {\n            this.pushState(model, caret);\n        } else {\n            this.lastCaret = caret;\n            this.changedSinceLastPush = true;\n        }\n        return shouldPush;\n    }\n\n    ensureLastChangesPushed(model: EditorModel) {\n        if (this.changedSinceLastPush) {\n            this.pushState(model, this.lastCaret);\n        }\n    }\n\n    canUndo() {\n        return this.currentIndex >= 1 || this.changedSinceLastPush;\n    }\n\n    canRedo() {\n        return this.currentIndex < (this.stack.length - 1);\n    }\n\n    // returns state that should be applied to model\n    undo(model: EditorModel) {\n        if (this.canUndo()) {\n            this.ensureLastChangesPushed(model);\n            this.currentIndex -= 1;\n            return this.stack[this.currentIndex];\n        }\n    }\n\n    // returns state that should be applied to model\n    redo() {\n        if (this.canRedo()) {\n            this.changedSinceLastPush = false;\n            this.currentIndex += 1;\n            return this.stack[this.currentIndex];\n        }\n    }\n}\n"]}