Method switch

tiling.js:1129–1184

(direction, loop)

    switchUp(loop) { return this.switch(Meta.MotionDirection.UP, loop); }
    switchDown(loop) { return this.switch(Meta.MotionDirection.DOWN, loop); }
    switch(direction, loop) {
        let space = this;
        let index = space.selectedIndex();
        if (index === -1) {
            return false;
        }
        let row = space[index].indexOf(space.selectedWindow);
        switch (direction) {
        case Meta.MotionDirection.RIGHT:
            index++;
            row = -1;
            break;
        case Meta.MotionDirection.LEFT:
            index--;
            row = -1;
        }
        if (loop) {
            if (index < 0) {
                index = space.length - 1;
            } else if (index >= space.length) {
                index = 0;
            }
        } else if (index < 0 || index >= space.length) {
            return false;
        }

        let column = space[index];

        if (row === -1) {
            let selected =
                sortWindows(this, column)[column.length - 1];
            row = column.indexOf(selected);
        }

        switch (direction) {
        case Meta.MotionDirection.UP:
            row--;
            break;
        case Meta.MotionDirection.DOWN:
            row++;
        }
        if (loop) {
            if (row < 0) {
                row = column.length - 1;
            } else if (row >= column.length) {
                row = 0;
            }
        } else if (row < 0 || row >= column.length) {
            return false;
        }

        let metaWindow = space.getWindow(index, row);
        ensureViewport(metaWindow, space);

        return true;
    }

    switchGlobalLeft() { this.switchGlobal(Meta.MotionDirection.LEFT); }