'''
@author: olivier.massot
'''

from PyQt5 import uic, QtCore
from PyQt5.Qt import Qt, QEvent, QGraphicsScene, QPointF, QFileDialog, \
    QApplication, QMessageBox, QTreeWidgetItem, \
    QGraphicsTextItem, QGraphicsItem, QGraphicsRectItem, \
    QBrush, QColor, QGraphicsLineItem, QLineF, \
    QPen, QPainter, QSvgGenerator, QSize, QRect, QGraphicsItemGroup, \
    QGraphicsColorizeEffect, QFont, QDialog, QTableWidgetItem, \
    QListWidgetItem, QInputDialog, QIcon, QPixmap, pyqtSignal, QObject, \
    QTreeWidgetItemIterator
from PyQt5.QtWidgets import QMainWindow, QGraphicsView
from path import Path

from core import ModuleObject
import core


Ui_window, _ = uic.loadUiType(Path(__file__).parent / 'qt_viewer.ui')
Ui_details, _ = uic.loadUiType(Path(__file__).parent / 'qt_details.ui')
Ui_select, _ = uic.loadUiType(Path(__file__).parent / 'qt_select_object.ui')

palette = {
            "Table": QColor(240, 240, 20),
            "Query": QColor(210, 50, 210),
            "Module": QColor(220, 10, 33),
            "Relation": QColor(122, 50, 209),
            "Report": QColor(25, 10, 220),
            "Form": QColor(10, 180, 220),
            "Macro": QColor(40, 220, 10),
          }

v_spacing = 120
cell_width = 150
cell_spacing = 25




class GraphicsObject(QGraphicsItemGroup):
    items = []

    def __init__(self, obj, parent=None):
        super(GraphicsObject, self).__init__(parent=parent)
        self.obj = obj
        self.links = []
        self._x = 0
        self._y = 0

        self.setFlag(QGraphicsItem.ItemIsMovable, True)
        self.setFlag(QGraphicsItem.ItemIsSelectable, True)
        self.setFlag(QGraphicsItem.ItemIsFocusable, True)
        self.setAcceptHoverEvents(True)

        self.label = QGraphicsTextItem()
        self.label.setTextWidth(cell_width)
        self.label.setZValue(2)
        self.setText()
        self.addToGroup(self.label)

        pen = QPen(palette[self.obj.type_].darker(150))
        pen.setWidth(2)
        self.rect = QGraphicsRectItem(self.label.boundingRect())
        self.rect.setPen(pen)
        self.rect.setBrush(palette[self.obj.type_].lighter(150))
        self.rect.setZValue(0)
        self.addToGroup(self.rect)

        self.topAnchorCoords = ((self.boundingRect().topLeft().x() + self.boundingRect().topRight().x() / 2), self.boundingRect().topLeft().y())
        self.bottomAnchorCoords = ((self.boundingRect().topLeft().x() + self.boundingRect().topRight().x() / 2), self.boundingRect().bottomLeft().y())
        self.top_anchor = QGraphicsRectItem(self.topAnchorCoords[0] - 3, self.topAnchorCoords[1] - 3, 6, 6)
        self.bottom_anchor = QGraphicsRectItem(self.bottomAnchorCoords[0] - 3, self.bottomAnchorCoords[1] - 3, 6, 6)
        for anchor in (self.top_anchor, self.bottom_anchor):
            anchor.setBrush(QBrush(QColor(255, 153, 51)))
            anchor.setZValue(1)
            self.addToGroup(anchor)

        effect = QGraphicsColorizeEffect()
        effect.setColor(QColor(255, 255, 255))
        effect.setStrength(0.35)
        effect.setEnabled(False)
        self.rect.setGraphicsEffect(effect)

        self.setToolTip("[{}] '{}'".format(self.obj.type_, self.obj.name_))

        GraphicsObject.items.append(self)

    def setText(self):
        self.label.setHtml(self.html())

    def html(self):
        return "[{}]<br/><b>{}</b>".format(self.obj.type_,
                                             self.obj.name_)

    def topAnchorCenter(self):
        return self.mapToScene(QPointF(*self.topAnchorCoords))

    def bottomAnchorCenter(self):
        return self.mapToScene(QPointF(*self.bottomAnchorCoords))

    def update(self):
        if self.pos() is not QPointF(self._x, self._y):
            self.setPos(QPointF(self._x, self._y))
        for l in self.links:
            l.update()

    def paint(self, *args, **kwargs):
        super(GraphicsObject, self).paint(*args, **kwargs)
        self._x, self._y = self.pos().x(), self.pos().y()
        self.update()

    def setShining(self, active):
        self.rect.graphicsEffect().setEnabled(active)

    def hoverEnterEvent(self, _):
        self.setShining(True)

    def hoverLeaveEvent(self, _):
        self.setShining(False)

    def mouseDoubleClickEvent(self, _):
        self.scene().itemDoubleClicked.emit(self)

class GraphicsRootObject(GraphicsObject):
    def __init__(self, obj, parent=None):
        super(GraphicsRootObject, self).__init__(obj, parent=parent)
        self.level = 0
        self.deps = []
        self.refs = []
        self._dep_emprise = 0
        self._ref_emprise = 0

        pen = QPen(QColor("red"))
        pen.setWidth(2)
        self.rect.setPen(pen)

    def xleft(self):
        return 0

    def compute_coords(self):
        return 0, 0

    def dep_emprise(self):
        if not self._dep_emprise:
            self._dep_emprise = sum([d.dep_emprise() for d in self.deps]) if self.deps else (cell_width + 2 * cell_spacing)
        return self._dep_emprise

    def ref_emprise(self):
        if not self._ref_emprise:
            self._ref_emprise = sum([r.ref_emprise() for r in self.refs]) if self.refs else (cell_width + 2 * cell_spacing)
        return self._ref_emprise

class GraphicsDepObject(GraphicsObject):
    def __init__(self, obj, parentItem, parent=None):
        super(GraphicsDepObject, self).__init__(obj, parent=parent)
        self.deps = []
        self.parentItem = parentItem
        if parentItem:
            parentItem.deps.append(self)
        self.level = parentItem.level + 1
        self._dep_emprise = 0

    def xleft(self):
        x0 = sum([n.dep_emprise() for n in self.parentItem.deps[0:self.parentItem.deps.index(self)]])
        return self.parentItem.xleft() + x0

    def compute_coords(self):
        x0 = sum([n.dep_emprise() for n in self.parentItem.deps[0:self.parentItem.deps.index(self)]])
        x = self.parentItem.xleft() + (0.5 * self.dep_emprise() - (cell_width / 2 + cell_spacing)) + x0
        y = v_spacing * self.level
        return x, y

    def dep_emprise(self):
        if not self._dep_emprise:
            self._dep_emprise = sum([d.dep_emprise() for d in self.deps]) if self.deps else (cell_width + 2 * cell_spacing)
        return self._dep_emprise

class GraphicsCloneDepObject(GraphicsDepObject):
    def __init__(self, obj, childItem, parent=None):
        super(GraphicsCloneDepObject, self).__init__(obj, childItem, parent)
        self.bottom_anchor.setBrush(QColor("red"))
        self.clone_of = next((item for item in GraphicsObject.items if item.obj is obj
                                                                    and (type(item) in (GraphicsRootObject, GraphicsDepObject, GraphicsRefObject))))

        self.setToolTip("L'objet [{}] '{}' a déjà été placé sur l'arbre".format(self.obj.type_, self.obj.name_))

    def html(self):
        return "* Clone *<br/>" + super(GraphicsCloneDepObject, self).html()

    @property
    def deps(self):
        return []

    @deps.setter
    def deps(self, value):
        pass

    def hoverEnterEvent(self, _):
        self.setShining(True)
        self.clone_of.setShining(True)

    def hoverLeaveEvent(self, _):
        self.setShining(False)
        self.clone_of.setShining(False)

class GraphicsRefObject(GraphicsObject):
    def __init__(self, obj, childItem, parent=None):
        super(GraphicsRefObject, self).__init__(obj, parent=parent)
        self.refs = []
        self.childItem = childItem
        if childItem:
            childItem.refs.append(self)
        self.level = childItem.level - 1
        self._ref_emprise = 0

    def xleft(self):
        x0 = sum([n.ref_emprise() for n in self.childItem.refs[0:self.childItem.refs.index(self)]])
        return self.childItem.xleft() + x0

    def compute_coords(self):
        x0 = sum([n.ref_emprise() for n in self.childItem.refs[0:self.childItem.refs.index(self)]])
        return self.childItem.xleft() + (0.5 * self.ref_emprise() - (cell_width / 2 + cell_spacing)) + x0, v_spacing * self.level

    def ref_emprise(self):
        if not self._ref_emprise:
            self._ref_emprise = sum([d.ref_emprise() for d in self.refs]) if self.refs else (cell_width + 2 * cell_spacing)
        return self._ref_emprise

class GraphicsCloneRefObject(GraphicsRefObject):
    def __init__(self, obj, childItem, parent=None):
        super(GraphicsCloneRefObject, self).__init__(obj, childItem, parent)
        self.top_anchor.setBrush(QColor("red"))
        self.clone_of = next((item for item in GraphicsObject.items if item.obj is obj
                                                                    and (type(item) in (GraphicsRootObject, GraphicsDepObject, GraphicsRefObject))))
        self.setToolTip("L'objet [{}] '{}' a déjà été placé sur l'arbre".format(self.obj.type_, self.obj.name_))

    def html(self):
        return "* Clone *<br/>" + super(GraphicsCloneRefObject, self).html()

    @property
    def refs(self):
        return []

    @refs.setter
    def refs(self, value):
        pass

    def hoverEnterEvent(self, _):
        self.setShining(True)
        self.clone_of.setShining(True)

    def hoverLeaveEvent(self, _):
        self.setShining(False)
        self.clone_of.setShining(False)

class GraphicsLink(QGraphicsLineItem):
    items = []
    def __init__(self, topGraphicsObject, bottomGraphicsObject, parent=None):
        self.topGraphicsObject = topGraphicsObject
        self.topGraphicsObject.links.append(self)

        self.bottomGraphicsObject = bottomGraphicsObject
        self.bottomGraphicsObject.links.append(self)

        super(QGraphicsLineItem, self).__init__(parent=parent)
        self.update()

    def update(self):
        line = QLineF(self.mapToScene(self.topGraphicsObject.bottomAnchorCenter()), self.mapToScene(self.bottomGraphicsObject.topAnchorCenter()))
        self.setLine(line)

class GraphicsScene(QGraphicsScene):
    itemDoubleClicked = pyqtSignal(object)


class Viewer(QMainWindow):

    def __init__(self):
        super (Viewer, self).__init__()
        self.createWidgets()

    def createWidgets(self):
        self.ui = Ui_window()
        self.ui.setupUi(self)

        self.ui.progressBar.setVisible(False)
        self.ui.stackedWidget.setCurrentIndex(0)
        self.ui.stackedView.setCurrentIndex(0)

        self.ui.btn_select.clicked.connect(self.selectSourceDir)
        self.ui.btn_zoom_plus.clicked.connect(self.zoom_plus)
        self.ui.btn_zoom_minus.clicked.connect(self.zoom_minus)
        self.ui.btn_zoom_view.clicked.connect(self.fit_in_view)
        self.ui.btn_zoom_center.clicked.connect(self.zoom_center)
        self.ui.btn_svg.clicked.connect(self.to_svg)
        self.ui.btn_save.clicked.connect(self.save)
        self.ui.btn_load.clicked.connect(self.open)
        self.ui.treeWidget.itemClicked.connect(self.treeItemSelected)
        self.ui.btn_edit_item.clicked.connect(self.edit_selected_item)
        self.ui.btn_graphic_view.clicked.connect(self.switch_graphic_view)
        self.ui.btn_table_view.clicked.connect(self.switch_table_view)
        self.ui.searchBoxDeps.textChanged.connect(self.filterTblDeps)
        self.ui.searchBoxRefs.textChanged.connect(self.filterTblRefs)
        self.ui.btnSearchTree.clicked.connect(self.searchTree)
        self.ui.searchBoxTree.returnPressed.connect(self.searchTree)

        self._title = "<unknown>"

        core.Analyse.report = self.update_progression

        self.ui.view.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate)
        self.ui.view.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
        self.ui.view.viewport().installEventFilter(self)

        self._scene = GraphicsScene()
        self._scene.setItemIndexMethod(QGraphicsScene.BspTreeIndex)
        self._scene.itemDoubleClicked.connect(self.graphicsObjectDoubleClicked)

        self.ui.view.setScene(self._scene)

        helpLabel = QGraphicsTextItem()
        helpLabel.setPlainText("Sélectionnez le répertoire contenant les sources de la base à analyser,\npuis sélectionnez dans la liste de droite un objet à partir duquel afficher les dépendances...")
        helpLabel.setTextWidth(600)
        font = QFont()
        font.setItalic(True)
        font.setWeight(63)
        helpLabel.setFont(font)

        self._scene.addItem(helpLabel)

    def eventFilter(self, _, event):
        if event.type() == QEvent.Wheel:
            if event.angleDelta().y() > 0:
                self.zoom_plus()
            elif event.angleDelta().y() < 0:
                self.zoom_minus()
            return True
        return False

    def fit_in_view(self):
        rect = self._scene.itemsBoundingRect()
        rect.adjust(-50, -50, 50, 50)
        self._scene.setSceneRect(rect)
        self.ui.view.fitInView(self._scene.sceneRect(), Qt.KeepAspectRatio)

    def zoom_plus(self):
        self.ui.view.scale(1.2, 1.2)

    def zoom_minus(self):
        self.ui.view.scale(0.8, 0.8)

    def zoom_center(self):
        root = next((item for item in GraphicsObject.items if type(item) is GraphicsRootObject))
        rect = root.boundingRect()
        rect.adjust(-200, -200, 200, 200)
        self.ui.view.fitInView(rect, Qt.KeepAspectRatio)

    def switch_graphic_view(self):
        self.ui.stackedView.setCurrentIndex(0)

    def switch_table_view(self):
        self.ui.stackedView.setCurrentIndex(1)

    def to_svg(self):
        fileName, _ = QFileDialog.getSaveFileName(self, "Save File", "", "Svg File (*.svg)")
        if not fileName:
            return
        gen = QSvgGenerator()
        gen.setFileName(fileName)
        gen.setSize(QSize(1000, 1000))
        gen.setViewBox(QRect(0, 0, 1000, 1000))
        gen.setTitle("Access Analyser")
        gen.setDescription("Access Analyser Report for {}".format(self._title))
        painter = QPainter(gen)
        self._scene.render(painter)
        painter.end()

    def save(self):
        if not core.Analyse.objects:
            return
        filepath, _ = QFileDialog.getSaveFileName(self, 'Enregistrer sous', '', "Access Analyser Files (*.acan)")
        if filepath:
            core.Analyse.dump_to(filepath)

    def open(self):
        filepath, _ = QFileDialog.getOpenFileName(self, 'Charger les données de', '', "Access Analyser Files (*.acan)")
        if filepath:
            core.Analyse.load_from(filepath)
        self._title = Path(filepath).name
        self.load()

    def update_progression(self, i, total, msg=""):
        self.ui.progressBar.setMaximum(total)
        self.ui.progressBar.setValue(i)
        if msg:
            self.ui.txtPanel.append(msg)
        QApplication.processEvents()

    def selectSourceDir(self):
        source_dir = QFileDialog.getExistingDirectory(self, "Sélectionner le répertoire des sources", "", QFileDialog.ShowDirsOnly)
        if not source_dir:
            return
        self.run(source_dir)

    def run(self, source_dir):
        source_dir = Path(source_dir)

        self._title = source_dir
        self.ui.stackedWidget.setCurrentIndex(0)

        self.ui.progressBar.setVisible(True)
        self.ui.txtPanel.clear()

        core.Analyse.run(source_dir)

        self.ui.progressBar.setVisible(False)

        self.ui.txtPanel.clear()
        self.load()

        QMessageBox.information(self, "Analyse", "Analyse terminée: {} objets chargés en mémoire".format(len(core.Analyse.objects)))

    def load(self):
        self.clear_scene()
        self.ui.treeWidget.clear()
        self.ui.stackedWidget.setCurrentIndex(1)

        topitem = QTreeWidgetItem()
        topitem.setText(0, "Objets")
        self.ui.treeWidget.addTopLevelItem(topitem)
        groupes = {}

        for index, obj in enumerate(core.Analyse.objects):
            if not obj.type_ in groupes:
                item = QTreeWidgetItem()
                item.setText(0, obj.type_)
                groupes[obj.type_] = item
                topitem.addChild(item)

            item = QTreeWidgetItem()
            if any(len(m.warnings) > 0 for m in obj.mentions):
                item.setIcon(0, QIcon(QPixmap(core.here / "rsc\\warning_16.png")))
            item.setText(1, obj.name_)
            item.setData(2, 0, index)
            groupes[obj.type_].addChild(item)

        self.ui.treeWidget.setColumnHidden(2, True)
        self.ui.treeWidget.expandToDepth(1)

        self.ui.btn_save.setEnabled(True)

    def enable_view_buttons(self, enable):
        self.ui.btn_zoom_plus.setEnabled(enable)
        self.ui.btn_zoom_center.setEnabled(enable)
        self.ui.btn_zoom_view.setEnabled(enable)
        self.ui.btn_zoom_minus.setEnabled(enable)
        self.ui.btn_graphic_view.setEnabled(enable)
        self.ui.btn_table_view.setEnabled(enable)

    def clear_scene(self):
        self._scene.clear()
        GraphicsObject.items = []
        self.enable_view_buttons(False)

    def update_view(self, root_object=None):
        if root_object is None:
            root_object = next((go.obj for go in GraphicsObject.items if type(go) is GraphicsRootObject))

        self.switch_graphic_view()
        self.clear_scene()

        root = GraphicsRootObject(root_object)
        self._scene.addItem(root)

        def _addDeps(go):
            for dep in go.obj.deps:
                if dep not in [go.obj for go in GraphicsObject.items]:
                    gdep = GraphicsDepObject(dep, go)
                    if dep.deps:
                        _addDeps(gdep)
                else:
                    gdep = GraphicsCloneDepObject(dep, go)

                self._scene.addItem(gdep)
                link = GraphicsLink(go, gdep)
                self._scene.addItem(link)

        _addDeps(root)

        def _addRefs(go):
            for ref in go.obj.refs:
                if ref not in [go.obj for go in GraphicsObject.items]:
                    gref = GraphicsRefObject(ref, go)
                    if ref.refs:
                        _addRefs(gref)
                else:
                    gref = GraphicsCloneRefObject(ref, go)

                self._scene.addItem(gref)
                link = GraphicsLink(gref, go)
                self._scene.addItem(link)

        _addRefs(root)

        for item in GraphicsObject.items:
            item._x, item._y = item.compute_coords()
            if isinstance(item, GraphicsDepObject):
                item._x -= (root.dep_emprise() - (cell_width + 2 * cell_spacing)) / 2
            if isinstance(item, GraphicsRefObject):
                item._x -= (root.ref_emprise() - (cell_width + 2 * cell_spacing)) / 2
            item.update()

        self.ui.tblDeps.clearContents()
        self.ui.tblRefs.clearContents()
        self.ui.tblDeps.setRowCount(0)
        self.ui.tblRefs.setRowCount(0)
        self.ui.lblRootTitle.setText("{}: {}".format(root_object.type_, root_object.name_))

        for item in GraphicsObject.items:
            if type(item) is GraphicsDepObject:
                row = self.ui.tblDeps.rowCount()
                self.ui.tblDeps.insertRow(row)
                self.ui.tblDeps.setItem(row, 0, QTableWidgetItem(item.obj.type_))
                self.ui.tblDeps.setItem(row, 1, QTableWidgetItem(item.obj.name_))
            if type(item) is GraphicsRefObject:
                row = self.ui.tblRefs.rowCount()
                self.ui.tblRefs.insertRow(row)
                self.ui.tblRefs.setItem(row, 0, QTableWidgetItem(item.obj.type_))
                self.ui.tblRefs.setItem(row, 1, QTableWidgetItem(item.obj.name_))

        self.enable_view_buttons(True)
        self.fit_in_view()

    def treeItemSelected(self, item):
        index = item.data(2, 0)
        if index is None:
            self.ui.btn_edit_item.setEnabled(False)
            return
        obj = core.Analyse.objects[index]
        self.update_view(obj)
        self.ui.btn_edit_item.setEnabled(True)

    def filterTblDeps(self, filterStr):
        for row in range(self.ui.tblDeps.rowCount()):
            content = "{}{}".format(self.ui.tblDeps.item(row, 0).text(), self.ui.tblDeps.item(row, 1).text())
            self.ui.tblDeps.setRowHidden(row, filterStr.lower() not in content.lower())

    def filterTblRefs(self, filterStr):
        for row in range(self.ui.tblRefs.rowCount()):
            content = "{}{}".format(self.ui.tblRefs.item(row, 0).text(), self.ui.tblRefs.item(row, 1).text())
            self.ui.tblRefs.setRowHidden(row, filterStr.lower() not in content.lower())

    def searchTree(self):
        filterStr = self.ui.searchBoxTree.text()
        if not filterStr:
            return

        items = self.ui.treeWidget.findItems(filterStr, Qt.MatchContains | Qt.MatchRecursive, 1)
        if not items:
            QMessageBox.warning(self, "Recherche", "Aucun résultat pour '{}'".format(filterStr))

        try:
            start = items.index(self.ui.treeWidget.currentItem()) + 1
        except ValueError:
            start = 0
        match = (items[start:] + items[:start])[0]
        self.ui.treeWidget.setCurrentItem(match)
        self.ui.treeWidget.scrollTo(self.ui.treeWidget.indexFromItem(match, 1))

    def edit(self, obj):
        dlg = DetailsDialog(obj, self)
        dlg.show()
        r = dlg.exec_()
        if r:
            core.Analyse.build_trees()
            self.update_view()
            item = self.find_tree_item(obj)
            if any(len(m.warnings) > 0 for m in obj.mentions):
                item.setIcon(0, QIcon(QPixmap(core.here / "rsc\\warning_16.png")))
            else:
                item.setIcon(0, QIcon())

    def find_tree_item(self, obj):
        return next((item for item in self.ui.treeWidget.findItems("", Qt.MatchContains | Qt.MatchRecursive, 1) if item.data(2, 0) == core.Analyse.objects.index(obj)))

    def edit_selected_item(self):
        index = self.ui.treeWidget.currentItem().data(2, 0)
        obj = core.Analyse.objects[index]
        self.edit(obj)

    def graphicsObjectDoubleClicked(self, go):
        self.edit(go.obj)

    def keyPressEvent(self, e):
        if e.key() == Qt.Key_S and e.modifiers() & Qt.ControlModifier:
            self.save()
            e.accept()
        if e.key() == Qt.Key_Control:
            self.ui.view.setDragMode(QGraphicsView.ScrollHandDrag)
            e.accept()

    def keyReleaseEvent(self, e):
        if e.key() == Qt.Key_Control:
            self.ui.view.setDragMode(QGraphicsView.RubberBandDrag)

class DetailsDialog(QDialog):

    def __init__(self, obj, parent=None):
        self.obj = obj
        super (DetailsDialog, self).__init__(parent)
        self.createWidgets()

    def createWidgets(self):
        self.ui = Ui_details()
        self.ui.setupUi(self)

        self.ui.tbl_mentions.verticalHeader().sectionDoubleClicked.connect(self.verticalHeaderDoubleClicked)

        self.ui.tbl_mentions.itemClicked.connect(self.itemClicked)
        self.ui.btn_add.clicked.connect(self.add_mention)
        self.ui.btn_edit.clicked.connect(self.edit_mention)
        self.ui.btn_del.clicked.connect(self.del_mention)
        self.ui.btn_ok.clicked.connect(self.ok)
        self.ui.btn_cancel.clicked.connect(self.ok)

        self.ui.lbl_title.setText("{}: {}".format(self.obj.type_, self.obj.name_))

        self.ui.tbl_mentions.hideColumn(0)
        self.ui.tbl_mentions.setColumnWidth(1, 50)
        self.ui.tbl_mentions.setColumnWidth(2, 70)
        self.ui.tbl_mentions.setColumnWidth(3, 150)

        self.load_table()

    def load_table(self):
        self.ui.tbl_mentions.setSortingEnabled(False)
        self.ui.tbl_mentions.clearContents()
        self.ui.tbl_mentions.setRowCount(len(self.obj.mentions))

        for index, mention in enumerate(self.obj.mentions):

            item = QTableWidgetItem("")
            if len(mention.warnings) > 0:
                item.setIcon(QIcon(QPixmap(core.here / "rsc\\warning_16.png")))
                item.setToolTip("\n".join([w.text for w in mention.warnings]) + "\n\nDoucle-cliquer pour supprimer l'avertissement.")
            self.ui.tbl_mentions.setVerticalHeaderItem(index, item)

            item = QTableWidgetItem("")
            item.setData(0, index)
            self.ui.tbl_mentions.setItem(index, 0, item)

            item = QTableWidgetItem("{}".format(mention.line))
            self.ui.tbl_mentions.setItem(index, 1, item)

            item = QTableWidgetItem("{}".format(mention.obj.type_))
            self.ui.tbl_mentions.setItem(index, 2, item)

            item = QTableWidgetItem("{}".format(mention.objname) if mention.obj.type_ != "Module" else "{}.{}".format(mention.obj.name_, mention.objname))
            self.ui.tbl_mentions.setItem(index, 3, item)

            item = QTableWidgetItem("{}".format(mention.quote))
            item.setFont(QFont("Consolas", 8))
            self.ui.tbl_mentions.setItem(index, 4, item)

        self.ui.tbl_mentions.setSortingEnabled(True)

    def itemClicked(self, _):
        self.ui.btn_edit.setEnabled(True)
        self.ui.btn_del.setEnabled(True)

    def verticalHeaderDoubleClicked(self, row):
        index = self.ui.tbl_mentions.item(row, 0).data(0)
        mention = self.obj.mentions[index]
        if mention.warnings:
            if QMessageBox.question(self, "Confirmation", "Voulez-vous supprimer cet avertissement?") == QMessageBox.Yes:
                del mention.warnings[:]
                self.ui.tbl_mentions.verticalHeaderItem(row).setIcon(QIcon())

    def add_mention(self):
        dlg = ObjectSelectorDialog(parent=self)
        dlg.show()
        r = dlg.exec_()
        if not r:
            return
        mention = core.Mention(0, dlg.obj.name_, "(ajouté manuellement)", dlg.obj)

        linenum, _ = QInputDialog.getInt(self, "Ligne", "Numéro de ligne correspondant dans le code-source? (facultatif)", 0)
        if linenum > 0:
            mention.line = linenum
            try:
                with open(self.obj.sourcefile, "r", encoding='utf-8') as f:
                    mention.quote = next((line.strip() for i, line in enumerate(f) if i == linenum - 1)).strip()
            except FileNotFoundError:
                pass

        self.obj.mentions.append(mention)
        self.load_table()

    def selected_index(self):
        row = self.ui.tbl_mentions.currentRow()
        if row < 0:
            return None
        return self.ui.tbl_mentions.item(row, 0).data(0)

    def edit_mention(self):
        row = self.ui.tbl_mentions.currentRow()
        if row < 0:
            return

        item = QTableWidgetItem("")
        item.setIcon(QIcon(QPixmap(core.here / "rsc\\edit_16.png")))
        self.ui.tbl_mentions.setVerticalHeaderItem(row, item)

        index = self.ui.tbl_mentions.item(row, 0).data(0)
        mention = self.obj.mentions[index]

        dlg = ObjectSelectorDialog(filterStr=mention.objname, parent=self)
        dlg.show()
        r = dlg.exec_()
        if r:
            mention.obj = dlg.obj
            mention.warning = ""
        self.load_table()

    def del_mention(self):
        index = self.selected_index()
        if not QMessageBox.question(self, "Confirmation", "Etes-vous sûr de vouloir supprimer la référence sélectionnée?") == QMessageBox.Yes:
            return
        del self.obj.mentions[index]
        self.load_table()

    def ok(self):
        self.done(1)

    def cancel(self):
        self.done(0)

    def keyPressEvent(self, e):
        if e.key() == Qt.Key_Delete:
            if self.ui.tbl_mentions.currentRow() < 0:
                return
            self.del_mention()
            e.accept()


class ObjectSelectorDialog(QDialog):

    def __init__(self, filterStr="", parent=None):
        self.obj = None
        super (ObjectSelectorDialog, self).__init__(parent)
        self.createWidgets()
        self.ui.searchBox.setText(filterStr)

    def createWidgets(self):
        self.ui = Ui_select()
        self.ui.setupUi(self)

        for obj in core.Analyse.objects:
            item = QListWidgetItem("{} - {}".format(obj.type_, obj.name_))
            item.obj = obj
            self.ui.listWidget.addItem(item)

        self.ui.searchBox.textChanged.connect(self.filter)
        self.ui.listWidget.itemClicked.connect(self.itemClicked)
        self.ui.listWidget.itemDoubleClicked.connect(self.itemDoubleClicked)
        self.ui.btn_ok.clicked.connect(self.ok)

    def itemClicked(self, item):
        self.obj = item.obj
        self.ui.btn_ok.setEnabled(True)

    def itemDoubleClicked(self, item):
        self.itemClicked(item)
        self.ok()

    def filter(self, filterStr):
        for i in range(self.ui.listWidget.count()):
            item = self.ui.listWidget.item(i)
            item.setHidden(filterStr.lower() not in item.text().lower())

    def ok(self):
        self.done(1)

    def done(self, status):
        if not status:
            self.obj = None
        super(ObjectSelectorDialog, self).done(status)