com.gluonhq.richtextarea.viewmodel.ActionCmdInsertEmoji Maven / Gradle / Ivy

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/*
 * Copyright (c) 2023, 2024, Gluon
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL GLUON BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.gluonhq.richtextarea.viewmodel;

import com.gluonhq.emoji.Emoji;
import com.gluonhq.richtextarea.Selection;
import javafx.beans.binding.BooleanBinding;

import java.util.Objects;

class ActionCmdInsertEmoji implements ActionCmd {

    private final Emoji content;
    private final Selection selection;
    private final boolean undoLast;

    public ActionCmdInsertEmoji(Emoji content, Selection selection, boolean undoLast) {
        this.content = content;
        this.selection = selection;
        this.undoLast = undoLast;
    }

    @Override
    public void apply(RichTextAreaViewModel viewModel) {
        if (Objects.requireNonNull(viewModel).isEditable() && content != null) {
            if (selection != null) {
                Selection newSelection = selection;
                if (undoLast) {
                    // Undo adding last unit
                    // This is needed to allow undo() calls.
                    // (Otherwise, calling undo() would remove the emoji, but then, as this last unit would be
                    // present, there would be immediately a call to select and replace the content with the
                    // emoji once again, and as a result, undo() won't do anything, at least apparently for the user)
                    viewModel.getCommandManager().undo();

                    // Update selection accordingly, removing from the original selection the length of the
                    // removed last unit
                    newSelection = new Selection(selection.getStart(), selection.getEnd() - 1);
                }
                viewModel.getCommandManager().execute(new SelectAndReplaceCmd(
                        viewModel.getTextBuffer().getInternalSelection(newSelection), content));
            } else {
                viewModel.getCommandManager().execute(new InsertCmd(content));
            }
        }
    }

    @Override
    public BooleanBinding getDisabledBinding(RichTextAreaViewModel viewModel) {
        return viewModel.editableProperty().not();
    }
}