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Update ChildViewLayoutDemo in prep for FlexGrid layout. #13

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Update ChildViewLayoutDemo in prep for FlexGrid layout. #13

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201 changes: 52 additions & 149 deletions apps/child_view_layout_demo/resources/demo_page.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,166 +4,34 @@
// ==========================================================================
/*globals ChildViewLayoutDemo */

sc_require('views/form_view');


// This page describes the main user interface for your application.
ChildViewLayoutDemo.demoPage = SC.Page.design({

// The main pane is made visible on screen as soon as your app is loaded.
// Add childViews to this pane for views to display immediately on page
// load.
demoContent: SC.View.design({
childViews: ['formView'],
demoContent: SC.TabView.extend({

formView: SC.View.extend({
layout: { border: 20 },

// -----------------------------------------------------------------------
// Properties
//
itemTitleKey: 'title',
itemValueKey: 'value',

childViews: ['v1', 'v2', 'v3', 'v4', 'label'],
classNames: ['wrapper-view'],
layout: { border: 2, centerX: 0, centerY: 0, width: 300 }, // No height required.
items: [
{ title: 'Vertical', value: 'verticalFormView' },
{ title: 'Horizontal', value: 'horizontalFormView' }
],

// Layout the child views vertically.
nowShowing: 'verticalFormView',

childViews: ['verticalFormView'],

verticalFormView: ChildViewLayoutDemo.FormView.extend({
layout: { border: 2, centerX: 0, centerY: 0, width: 300 }, // No height required.
childViewLayout: SC.View.VERTICAL_STACK,
childViewLayoutOptionsBinding: SC.Binding.oneWay('ChildViewLayoutDemo.childViewLayoutOptions'),

// Smoothly resize.
transitionAdjust: SC.View.SMOOTH_ADJUST,
transitionAdjustOptions: { duration: 0.2 },

/** @private SC.View. Don't transition when doing live resize. */
beginLiveResize: function () {
sc_super();

this.set('transitionAdjust', null);
},

/** @private SC.View. Allowing transitioning again. */
endLiveResize: function () {
sc_super();

this.set('transitionAdjust', SC.View.SMOOTH_ADJUST);
},

// -----------------------------------------------------------------------
// SC.DropTarget Support
//

/** @private SC.DropTarget protocol. */
isDropTarget: true,

/** @private SC.DropTarget protocol. */
computeDragOperations: function (drag, evt, op) {
return SC.DRAG_MOVE;
},

/** @private SC.DropTarget protocol. */
dragUpdated: function (drag, evt) {
// console.log('%@ - dragUpdated(%@, evt): dragView: %@'.fmt(this, drag, drag.dragView));
var point = { x: evt.clientX, y: evt.clientY },
childViews = this.get('childViews'),
dragView = drag.dragView,
options = this.get('childViewLayoutOptions');

// Cycle through the child views and find whichever one it is over and insert a drop placeholder child at that point.
for (var i = 0, len = childViews.get('length'); i < len; i++) {
var childView = childViews.objectAt(i),
frame = SC.clone(childView.get('frame')),
layout = childView.get('layout'),
borderingChildView, pageFrame;

// Adjust the frame all the way to the left & right.
frame.x -= layout.left;
frame.width += layout.left + layout.right;

// If followed by the drop zone, cut our frame to the top two thirds.
borderingChildView = childViews.objectAt(i + 1);
if (borderingChildView && borderingChildView === dragView) {
frame.height = frame.height / 1.5;
}

// If preceded by the drop zone, cut our frame to the bottom two thirds.
borderingChildView = childViews.objectAt(i - 1);
if (borderingChildView && borderingChildView === dragView) {
frame.y += frame.height / 3;
frame.height = frame.height / 1.5;
}

// Stretch the first frame up and the last frame down, which allows you
// to drag in from the top or bottom edge and get the top or bottom
// drop zone.
if (i === 0) {
frame.y -= options.paddingBefore;
frame.height += options.paddingBefore;
}
if (i === len - 1) {
frame.height += options.paddingAfter;
}

// Convert the frame into window coordinates and check the point.
pageFrame = this.convertFrameToView(frame, null);
if (SC.pointInRect(point, pageFrame)) {
break;
}
}

if (i < len) {
// Move the drag view to the target child view index.
var curDropViewIdx = childViews.indexOf(dragView);
if (curDropViewIdx !== i) {
// Remove the view from the old spot.
if (curDropViewIdx >= 0) {
this.removeChild(dragView);
}

// Insert the view in the new spot.
this.insertBefore(dragView, childViews.objectAt(i));
}
}
},

/** @private SC.DropTarget protocol. */
dragStarted: function (drag, evt) {
var dragView = drag.dragView;

dragView.set('transitionAdjust', null);
},

/** @private SC.DropTarget protocol. */
dragEntered: function (drag, evt) {
// var dragView = drag.dragView;
},

/** @private SC.DropTarget protocol. */
dragExited: function (drag, evt) {
var dragView = drag.dragView;

if (this.get('childViews').indexOf(dragView) >= 0) {
this.removeChild(dragView);
}
},

/** @private SC.DropTarget protocol. */
dragEnded: function (drag, evt) {
var dragView = drag.dragView;

dragView.set('transitionAdjust', SC.View.SMOOTH_ADJUST);
},

/** @private SC.DropTarget protocol. */
acceptDragOperation: function (drag, op) {
return YES;
},

/** @private SC.DropTarget protocol. */
performDragOperation: function (drag, op) {
return SC.DRAG_NONE;
},

// -----------------------------------------------------------------------
// Child Views
//

v1: ChildViewLayoutDemo.SampleView.design({
classNames: ['view1'],
Expand Down Expand Up @@ -191,11 +59,46 @@ ChildViewLayoutDemo.demoPage = SC.Page.design({

label: SC.LabelView.extend({
classNames: ['form-label'],
layout: { height: 30, left: 10, right: 10, bottom: 0 },
layout: { height: 30, left: 10, right: 10, bottom: 0 },
localize: true,
useAbsoluteLayout: true,
value: "_DragLabel"
})
}),

horizontalFormView: ChildViewLayoutDemo.FormView.extend({
layout: { border: 2, centerX: 0, centerY: 0, height: 300 }, // No width required.
childViewLayout: SC.View.HORIZONTAL_STACK,

v1: ChildViewLayoutDemo.SampleView.design({
classNames: ['view1'],
layout: { border: 2, top: 5, bottom: 30, width: 100 }, // No left required.
value: 'A'
}),

v2: ChildViewLayoutDemo.SampleView.design({
classNames: ['view2'],
layout: { border: 2, top: 5, bottom: 30, width: 150 }, // No left required.
value: 'B'
}),

v3: ChildViewLayoutDemo.SampleView.design({
classNames: ['view3'],
layout: { border: 2, top: 5, bottom: 30, width: 75 }, // No left required.
value: 'C'
}),

v4: ChildViewLayoutDemo.SampleView.design({
classNames: ['view4'],
layout: { border: 2, top: 5, bottom: 30, width: 125 }, // No left required.
value: 'D'
}),

label: SC.View.extend({
layout: { width: 0 },
useAbsoluteLayout: true
})

})

// UNUSED.
Expand Down
149 changes: 149 additions & 0 deletions apps/child_view_layout_demo/views/form_view.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,149 @@
sc_require('views/sample_view');

ChildViewLayoutDemo.FormView = SC.View.extend({

// -----------------------------------------------------------------------
// Properties
//

childViews: ['v1', 'v2', 'v3', 'v4', 'label'],
classNames: ['wrapper-view'],

// Layout the child views vertically by default
childViewLayout: SC.View.VERTICAL_STACK,
childViewLayoutOptionsBinding: SC.Binding.oneWay('ChildViewLayoutDemo.childViewLayoutOptions'),

// Smoothly resize.
transitionAdjust: SC.View.SMOOTH_ADJUST,
transitionAdjustOptions: { duration: 0.2 },

/** @private SC.View. Don't transition when doing live resize. */
beginLiveResize: function () {
sc_super();

this.set('transitionAdjust', null);
},

/** @private SC.View. Allowing transitioning again. */
endLiveResize: function () {
sc_super();

this.set('transitionAdjust', SC.View.SMOOTH_ADJUST);
},

// -----------------------------------------------------------------------
// SC.DropTarget Support
//

/** @private SC.DropTarget protocol. */
isDropTarget: true,

/** @private SC.DropTarget protocol. */
computeDragOperations: function (drag, evt, op) {
return SC.DRAG_MOVE;
},

/** @private SC.DropTarget protocol. */
dragUpdated: function (drag, evt) {
// console.log('%@ - dragUpdated(%@, evt): dragView: %@'.fmt(this, drag, drag.dragView));
var point = { x: evt.clientX, y: evt.clientY },
childViews = this.get('childViews'),
dragView = drag.dragView,
options = this.get('childViewLayoutOptions');

// Cycle through the child views and find whichever one it is over and insert a drop placeholder child at that point.
for (var i = 0, len = childViews.get('length'); i < len; i++) {
var childView = childViews.objectAt(i),
frame = SC.clone(childView.get('frame')),
layout = childView.get('layout'),
borderingChildView, pageFrame;

// Adjust the frame all the way to the left & right.
frame.x -= layout.left;
frame.width += layout.left + layout.right;

// If followed by the drop zone, cut our frame to the top two thirds.
borderingChildView = childViews.objectAt(i + 1);
if (borderingChildView && borderingChildView === dragView) {
frame.height = frame.height / 1.5;
}

// If preceded by the drop zone, cut our frame to the bottom two thirds.
borderingChildView = childViews.objectAt(i - 1);
if (borderingChildView && borderingChildView === dragView) {
frame.y += frame.height / 3;
frame.height = frame.height / 1.5;
}

// Stretch the first frame up and the last frame down, which allows you
// to drag in from the top or bottom edge and get the top or bottom
// drop zone.
if (i === 0) {
frame.y -= options.paddingBefore;
frame.height += options.paddingBefore;
}
if (i === len - 1) {
frame.height += options.paddingAfter;
}

// Convert the frame into window coordinates and check the point.
pageFrame = this.convertFrameToView(frame, null);
if (SC.pointInRect(point, pageFrame)) {
break;
}
}

if (i < len) {
// Move the drag view to the target child view index.
var curDropViewIdx = childViews.indexOf(dragView);
if (curDropViewIdx !== i) {
// Remove the view from the old spot.
if (curDropViewIdx >= 0) {
this.removeChild(dragView);
}

// Insert the view in the new spot.
this.insertBefore(dragView, childViews.objectAt(i));
}
}
},

/** @private SC.DropTarget protocol. */
dragStarted: function (drag, evt) {
var dragView = drag.dragView;

dragView.set('transitionAdjust', null);
},

/** @private SC.DropTarget protocol. */
dragEntered: function (drag, evt) {
// var dragView = drag.dragView;
},

/** @private SC.DropTarget protocol. */
dragExited: function (drag, evt) {
var dragView = drag.dragView;

if (this.get('childViews').indexOf(dragView) >= 0) {
this.removeChild(dragView);
}
},

/** @private SC.DropTarget protocol. */
dragEnded: function (drag, evt) {
var dragView = drag.dragView;

dragView.set('transitionAdjust', SC.View.SMOOTH_ADJUST);
},

/** @private SC.DropTarget protocol. */
acceptDragOperation: function (drag, op) {
return YES;
},

/** @private SC.DropTarget protocol. */
performDragOperation: function (drag, op) {
return SC.DRAG_NONE;
}

});
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