clide/qml/ClideTreeView.qml

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts

import clide.module 1.0

Rectangle {
    id: root

    signal fileClicked(string filePath)

    color: RustColors.explorer_background

    TreeView {
        id: fileSystemTreeView

        // rootIndex: FileSystem.rootIndex
        property int lastIndex: -1

        model: FileSystem
        anchors.fill: parent
        boundsBehavior: Flickable.StopAtBounds
        boundsMovement: Flickable.StopAtBounds
        clip: true

        Component.onCompleted: {
            FileSystem.setDirectory(FileSystem.filePath)
            fileSystemTreeView.expandRecursively(0, 4)
        }

        // The delegate represents a single entry in the filesystem.
        delegate: TreeViewDelegate {
            id: treeDelegate
            indentation: 8
            implicitWidth: fileSystemTreeView.width > 0 ? fileSystemTreeView.width : 250
            implicitHeight: 25

            required property int index
            required property url filePath
            required property string fileName

            indicator: Image {
                id: directoryIcon

                x: treeDelegate.leftMargin + (treeDelegate.depth * treeDelegate.indentation)
                anchors.verticalCenter: parent.verticalCenter
                source: {
                    // If the item has children, it's a directory.
                    if (treeDelegate.hasChildren) {
                        return treeDelegate.expanded ?
                            "../icons/folder-open-solid.svg" : "../icons/folder-solid.svg";
                    }
                    return "../icons/file-solid.svg"
                }
                sourceSize.width: 15
                sourceSize.height: 15
                fillMode: Image.PreserveAspectFit

                smooth: true
                antialiasing: true
                asynchronous: true
            }

            contentItem: Text {
                text: treeDelegate.fileName
                color: RustColors.explorer_text
            }

            background: Rectangle {
                // TODO: Fix flickering from color transition on states here.
                color: (treeDelegate.index === fileSystemTreeView.lastIndex)
                    ? RustColors.explorer_text_selected
                    : (hoverHandler.hovered ? RustColors.explorer_hovered : "transparent")
                radius: 2.5
                opacity: hoverHandler.hovered ? 0.75 : 1.0

                Behavior on color {
                    ColorAnimation {
                        duration: 300
                    }
                }
            }

            HoverHandler {
                id: hoverHandler
            }

            TapHandler {
                acceptedButtons: Qt.LeftButton | Qt.RightButton
                onSingleTapped: (eventPoint, button) => {
                    switch (button) {
                        case Qt.LeftButton:
                            fileSystemTreeView.toggleExpanded(treeDelegate.row)
                            fileSystemTreeView.lastIndex = treeDelegate.index
                            // If this model item doesn't have children, it means it's
                            // representing a file.
                            if (!treeDelegate.hasChildren)
                                root.fileClicked(treeDelegate.filePath)
                            break;
                        case Qt.RightButton:
                            if (treeDelegate.hasChildren)
                                contextMenu.popup();
                            break;
                    }
                }
            }

            Menu {
                id: contextMenu
                Action {
                    text: qsTr("Set as root index")
                    onTriggered: {
                        console.log("Setting directory: " + treeDelegate.filePath)
                        FileSystem.setDirectory(treeDelegate.filePath)
                    }
                }
                Action {
                    text: qsTr("Reset root index")
                    onTriggered: {
                        FileSystem.setDirectory("")
                    }
                }
            }
        }

        // Provide our own custom ScrollIndicator for the TreeView.
        ScrollIndicator.vertical: ScrollIndicator {
            active: true
            implicitWidth: 15

            contentItem: Rectangle {
                implicitWidth: 6
                implicitHeight: 6

                color: RustColors.scrollbar
                opacity: fileSystemTreeView.movingVertically ? 0.5 : 0.0

                Behavior on opacity {
                    OpacityAnimator {
                        duration: 500
                    }
                }
            }
        }
    }
}