multiview

class webix.ui.multiview(data)
Arguments:
  • data (object) – A configuration object

Multiview view.

External references

Official documentation page.

Code

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webix.protoUI({
    name:"multiview",
    defaults:{
        animate:{
        }
    },
    setValue:function(val){
        webix.$$(val).show();
    },
    getValue:function(){
        return this.getActiveId();
    },
    $init:function(){
        this._active_cell = 0;
        this._vertical_orientation = 1;
        this._viewobj.style.position = "relative";
        this._viewobj.className += " webix_multiview";
        this._back_queue = [];
    },
    _ask_render:function(cell_id, view_id){
        var cell = webix.$$(cell_id);
        if (!cell._render_hash){
            cell._render_queue = [];
            cell._render_hash = {};
        }
        if (!cell._render_hash[view_id]){
            cell._render_hash[view_id]=true;
            cell._render_queue.push(view_id);
        }
    },
    _render_activation:function(cell_id){
        var cell = webix.$$(cell_id);
        if(this._settings.keepViews)
            cell._viewobj.style.display = "";
        /*back array*/
        if(this._back_queue[this._back_queue.length-2]!=cell_id){
            if(this._back_queue.length==10)
                this._back_queue.splice(0,1);
            this._back_queue.push(cell_id);
        }
        else
            this._back_queue.splice(this._back_queue.length-1,1);

        if (cell._render_hash){
            for (var i=0; i < cell._render_queue.length; i++){
                var subcell = webix.$$(cell._render_queue[i]);
                //cell can be already destroyed
                if (subcell)
                    subcell.render();
            }

            cell._render_queue = [];
            cell._render_hash = {};
        }
    },
    addView:function(){
        var id = webix.ui.baselayout.prototype.addView.apply(this, arguments);
        if(this._settings.keepViews)
            webix.$$(id)._viewobj.style.display = "none";
        else
            webix.html.remove(webix.$$(id)._viewobj);
        return id;
    },
    _beforeRemoveView:function(index, view){
        //removing current view
        if (index == this._active_cell){
            var next = Math.max(index-1, 0);
            if (this._cells[next]){
                this._in_animation = false;
                this._show(this._cells[next], false);
            }
        }

        if (index < this._active_cell)
            this._active_cell--;
    },
    //necessary, as we want to ignore hide calls for elements in multiview
    _hide:function(){},
    _parse_cells:function(collection){
        collection = collection || this._collection;

        for (var i=0; i < collection.length; i++)
            collection[i]._inner = this._settings.borderless?{top:1, left:1, right:1, bottom:1}:(this._settings._inner||{});

        webix.ui.baselayout.prototype._parse_cells.call(this, collection);

        for (var i=1; i < this._cells.length; i++){
            if(this._settings.keepViews)
                this._cells[i]._viewobj.style.display = "none";
            else
                webix.html.remove(this._cells[i]._viewobj);
        }


        for (var i=0; i<collection.length; i++){
            var cell = this._cells[i];
            if (cell._cells && !cell._render_borders) continue;

            var _inner = cell._settings._inner;
            if (_inner.top)
                cell._viewobj.style.borderTopWidth="0px";
            if (_inner.left)
                cell._viewobj.style.borderLeftWidth="0px";
            if (_inner.right)
                cell._viewobj.style.borderRightWidth="0px";
            if (_inner.bottom)
                cell._viewobj.style.borderBottomWidth="0px";

            cell._viewobj.setAttribute("role", "tabpanel");
        }
        this._render_activation(this.getActiveId());
    },
    cells_setter:function(value){
        webix.assert(value && value.length,"Multiview must have at least one view in 'cells'");
        this._collection = value;
    },
    _getDirection:function(next, active){
        var dir = (this._settings.animate || {}).direction;
        var vx = (dir == "top" || dir == "bottom");
        return   next < active ? (vx?"bottom":"right"):(vx?"top":"left");
    },
    _show:function(obj, animation_options){

        var parent = this.getParentView();
        if (parent && parent.getTabbar)
            parent.getTabbar().setValue(obj._settings.$id || obj._settings.id);

         if (this._in_animation)
            return webix.delay(this._show, this,[obj, animation_options],100);

        var _next_cell = -1;
        for (var i=0; i < this._cells.length; i++)
            if (this._cells[i]==obj){
                _next_cell = i;
                break;
            }
        if (_next_cell < 0 || _next_cell == this._active_cell)
            return;


        var prev = this._cells[this._active_cell];
        var next = this._cells[ _next_cell ];
        var size = prev.$getSize(0,0);

        //need to be moved in animate
        if((animation_options||typeof animation_options=="undefined")&&webix.animate.isSupported() && this._settings.animate) {
            var aniset = webix.extend({}, this._settings.animate);
            if(this._settings.keepViews)
                aniset.keepViews = true;
            aniset.direction = this._getDirection(_next_cell,this._active_cell);
            aniset = webix.Settings._mergeSettings(animation_options||{}, aniset);

            var line = webix.animate.formLine(
                next._viewobj,
                prev._viewobj,
                aniset);
            next.$getSize(0,0);
            next.$setSize(this._content_width,this._content_height);

            var callback_original = aniset.callback;
            aniset.callback = function(){
                webix.animate.breakLine(line,this._settings.keepViews);
                this._in_animation = false;
                if (callback_original) callback_original.call(this);
                callback_original = aniset.master = aniset.callback = null;
                this.resize();
            };
            aniset.master = this;

            this._active_cell = _next_cell;
            this._render_activation(this.getActiveId());

            webix.animate(line, aniset);
            this._in_animation = true;
        }
        else { // browsers which don't support transform and transition
            if(this._settings.keepViews){
                prev._viewobj.style.display = "none";
            }
            else{
                webix.html.remove(prev._viewobj);
                this._viewobj.appendChild(this._cells[i]._viewobj);
            }

            this._active_cell = _next_cell;

            prev.resize();
            this._render_activation(this.getActiveId());
        }

        if (next.callEvent){
            next.callEvent("onViewShow",[]);
            webix.ui.each(next, this._signal_hidden_cells);
        }

        this.callEvent("onViewChange",[prev._settings.id, next._settings.id]);

    },
    $getSize:function(dx, dy){
        webix.debug_size_box_start(this, true);
        var size = this._cells[this._active_cell].$getSize(0, 0);
        if (this._settings.fitBiggest){
            for (var i=0; i<this._cells.length; i++)
                if (i != this._active_cell){
                    var other = this._cells[i].$getSize(0, 0);
                    for (var j = 0; j < 4; j++)
                        size[j] = Math.max(size[j], other[j]);
                }
        }


        //get layout sizes
        var self_size = webix.ui.baseview.prototype.$getSize.call(this, 0, 0);
        //use child settings if layout's one was not defined
        if (self_size[1] >= 100000) self_size[1]=0;
        if (self_size[3] >= 100000) self_size[3]=0;

        self_size[0] = (self_size[0] || size[0] ) +dx;
        self_size[1] = (self_size[1] || size[1] ) +dx;
        self_size[2] = (self_size[2] || size[2] ) +dy;
        self_size[3] = (self_size[3] || size[3] ) +dy;

        webix.debug_size_box_end(this, self_size);

        return self_size;
    },
    $setSize:function(x,y){
        this._layout_sizes = [x,y];
        webix.ui.baseview.prototype.$setSize.call(this,x,y);
        this._cells[this._active_cell].$setSize(x,y);
    },
    isVisible:function(base_id, cell_id){
        if (cell_id && cell_id != this.getActiveId()){
            if (base_id)
                this._ask_render(cell_id, base_id);
            return false;
        }
        return webix.ui.view.prototype.isVisible.call(this, base_id, this._settings.id);
    },
    getActiveId:function(){
        return this._cells.length?this._cells[this._active_cell]._settings.id:null;
    },
    back:function(step){
        step=step||1;
        if(this.callEvent("onBeforeBack",[this.getActiveId(), step])){
            if(this._back_queue.length>step){
                var viewId = this._back_queue[this._back_queue.length-step-1];
                webix.$$(viewId).show();
                return viewId;
            }
            return null;
        }
        return null;

    }
},webix.ui.baselayout);