chushihua

node_modules/element-ui/src/utils/popup/popup-manager.js

@@ -0,0 +1,194 @@
+import Vue from 'vue';
+import { addClass, removeClass } from 'element-ui/src/utils/dom';
+
+let hasModal = false;
+let hasInitZIndex = false;
+let zIndex = 2000;
+
+const getModal = function() {
+  if (Vue.prototype.$isServer) return;
+  let modalDom = PopupManager.modalDom;
+  if (modalDom) {
+    hasModal = true;
+  } else {
+    hasModal = false;
+    modalDom = document.createElement('div');
+    PopupManager.modalDom = modalDom;
+
+    modalDom.addEventListener('touchmove', function(event) {
+      event.preventDefault();
+      event.stopPropagation();
+    });
+
+    modalDom.addEventListener('click', function() {
+      PopupManager.doOnModalClick && PopupManager.doOnModalClick();
+    });
+  }
+
+  return modalDom;
+};
+
+const instances = {};
+
+const PopupManager = {
+  modalFade: true,
+
+  getInstance: function(id) {
+    return instances[id];
+  },
+
+  register: function(id, instance) {
+    if (id && instance) {
+      instances[id] = instance;
+    }
+  },
+
+  deregister: function(id) {
+    if (id) {
+      instances[id] = null;
+      delete instances[id];
+    }
+  },
+
+  nextZIndex: function() {
+    return PopupManager.zIndex++;
+  },
+
+  modalStack: [],
+
+  doOnModalClick: function() {
+    const topItem = PopupManager.modalStack[PopupManager.modalStack.length - 1];
+    if (!topItem) return;
+
+    const instance = PopupManager.getInstance(topItem.id);
+    if (instance && instance.closeOnClickModal) {
+      instance.close();
+    }
+  },
+
+  openModal: function(id, zIndex, dom, modalClass, modalFade) {
+    if (Vue.prototype.$isServer) return;
+    if (!id || zIndex === undefined) return;
+    this.modalFade = modalFade;
+
+    const modalStack = this.modalStack;
+
+    for (let i = 0, j = modalStack.length; i < j; i++) {
+      const item = modalStack[i];
+      if (item.id === id) {
+        return;
+      }
+    }
+
+    const modalDom = getModal();
+
+    addClass(modalDom, 'v-modal');
+    if (this.modalFade && !hasModal) {
+      addClass(modalDom, 'v-modal-enter');
+    }
+    if (modalClass) {
+      let classArr = modalClass.trim().split(/\s+/);
+      classArr.forEach(item => addClass(modalDom, item));
+    }
+    setTimeout(() => {
+      removeClass(modalDom, 'v-modal-enter');
+    }, 200);
+
+    if (dom && dom.parentNode && dom.parentNode.nodeType !== 11) {
+      dom.parentNode.appendChild(modalDom);
+    } else {
+      document.body.appendChild(modalDom);
+    }
+
+    if (zIndex) {
+      modalDom.style.zIndex = zIndex;
+    }
+    modalDom.tabIndex = 0;
+    modalDom.style.display = '';
+
+    this.modalStack.push({ id: id, zIndex: zIndex, modalClass: modalClass });
+  },
+
+  closeModal: function(id) {
+    const modalStack = this.modalStack;
+    const modalDom = getModal();
+
+    if (modalStack.length > 0) {
+      const topItem = modalStack[modalStack.length - 1];
+      if (topItem.id === id) {
+        if (topItem.modalClass) {
+          let classArr = topItem.modalClass.trim().split(/\s+/);
+          classArr.forEach(item => removeClass(modalDom, item));
+        }
+
+        modalStack.pop();
+        if (modalStack.length > 0) {
+          modalDom.style.zIndex = modalStack[modalStack.length - 1].zIndex;
+        }
+      } else {
+        for (let i = modalStack.length - 1; i >= 0; i--) {
+          if (modalStack[i].id === id) {
+            modalStack.splice(i, 1);
+            break;
+          }
+        }
+      }
+    }
+
+    if (modalStack.length === 0) {
+      if (this.modalFade) {
+        addClass(modalDom, 'v-modal-leave');
+      }
+      setTimeout(() => {
+        if (modalStack.length === 0) {
+          if (modalDom.parentNode) modalDom.parentNode.removeChild(modalDom);
+          modalDom.style.display = 'none';
+          PopupManager.modalDom = undefined;
+        }
+        removeClass(modalDom, 'v-modal-leave');
+      }, 200);
+    }
+  }
+};
+
+Object.defineProperty(PopupManager, 'zIndex', {
+  configurable: true,
+  get() {
+    if (!hasInitZIndex) {
+      zIndex = (Vue.prototype.$ELEMENT || {}).zIndex || zIndex;
+      hasInitZIndex = true;
+    }
+    return zIndex;
+  },
+  set(value) {
+    zIndex = value;
+  }
+});
+
+const getTopPopup = function() {
+  if (Vue.prototype.$isServer) return;
+  if (PopupManager.modalStack.length > 0) {
+    const topPopup = PopupManager.modalStack[PopupManager.modalStack.length - 1];
+    if (!topPopup) return;
+    const instance = PopupManager.getInstance(topPopup.id);
+
+    return instance;
+  }
+};
+
+if (!Vue.prototype.$isServer) {
+  // handle `esc` key when the popup is shown
+  window.addEventListener('keydown', function(event) {
+    if (event.keyCode === 27) {
+      const topPopup = getTopPopup();
+
+      if (topPopup && topPopup.closeOnPressEscape) {
+        topPopup.handleClose
+          ? topPopup.handleClose()
+          : (topPopup.handleAction ? topPopup.handleAction('cancel') : topPopup.close());
+      }
+    }
+  });
+}
+
+export default PopupManager;